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What are Skin Tags on a Dog?

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dog-skin-tagsIn dog circles, there are often some terms that are not quite readily easy to understand and skin tags may be one of them. What are skin tags on a dog? What do dog skin tags look like? Where are dog skin tags found?

If you never heard about the term skin tag before, you may be wondering exactly what dog skin tags are, especially if you are a dog owner. Or maybe you may have stumbled on the term before, perhaps coming from other dog owners or from a vet, but were too embarrassed to ask what on earth dog skin tags are exactly.

On the other hand, it might be you know what dog skin tags are and just want to learn more about them. So today’s trivia question of the day revolves around skin tags in dogs, will you be able to identify the correct answer?

What are skin tags in dogs?

A  It’s a tag embedded in the dog’s skin for identification purposes

B It’s a tag attached to a dog’s skin with a registration number for breeding specimens.

C It’s a small growth on the dog’s skin

D It’s a small remnant of skin that may stick out after a dog had stitches that failed to close correctly.

The correct answer is, drum roll please ……

drum

 

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The correct answer is C: A skin tag in a dog is a small growth found on the dog’s skin.

skin-tag-on-dog-legSo What on Earth Are Skin Tags in Dogs?

Veterinarians are quite used to dog owners wondering about skin tags. Dog owners may be petting their dogs when they suddenly stumble upon this fleshy little growth that is flexible and bends and that they have never noticed before.

Next thing they know, they rush over to the vet concerned about it.”What is this penduculated blob of  hairless skin doing on my dog’s chest?”

What do dog skin tags look like? Dog owners may describe skin tags as being small like a grain of rice or fleshy like a raisin, but what are really skin tags, and most of all, how did they end up being on the dog in the first place?

Medically known as acrochordons, the Merck Veterinary Manual describes skin tags as being benign, cutaneous growths often found in older dogs. Skin tags can develop in any dog breed and can present as isolated growths or they can be in good company appearing in several different parts of the dog’s body.

Skin tags are normally not painful when touched and may appear on the dog’s face, head, legs, chest area and armpit area, but they can really appear just about anywhere. Fortunately, in many cases, skin tags are nothing to worry about and the vet may recommend just keeping an eye on these growths and report if skin tags in dogs get bigger or change appearance. Yes, dog skin tags are unsightly, but they often seem to bother more owners than dogs. While skin tags are considered benign, as with any lumps, bumps and growths, a biopsy may be needed to confirm it’s truly a skin tag.

engorged-dog-tick
Dog skin tags may look like ticks!

Skin Tag or Tick?

Often, when dog owners find a skin tag on their dog, they often wonder if it’s an actual skin tag or a tick. The two may resemble a bit each other, but there is an easy way to figure it out.

Simply, part the dog’s hair and then carefully look at the area where the “growth” attaches to the skin. Do you see wriggling legs or a mouth part? To get a better look, you might have to grab a magnifying glass just to make sure. Just in case you are wondering, yes, the picture on the right is featuring an embedded tick.  Yes, gross!

If you see wriggling legs, then  you can simply remove it by grabbing it firmly by the head as close to the dog’s skin as you can  with a pair of tweezers and then gently tug it off. Ideally, you should get the tick all out, but if you leave the head behind, the dog’s body, with time, will dislodge it on its own.

If it’s a skin tag, you should have your vet take a look at it and see what he recommends doing. Chances are, if it ‘s just a skin tag, he may recommend keeping at eye on it, but some vets are more conservative and will recommend having it biopsied to err on the side of caution.

How to Remove Skin Tags in Dogsveterinary

Removal of skin tags in dogs is usually optional, but sometimes there may be some good reasons for removing them.

For instance, if the dog tends to pester his skin tag, chewing on it or scratching it, it’s a good idea to have it removed as skin tags tend to bleed, get irritated and can become infected.

If the dog’s skin tag is located in a bothersome area such as where the collar goes or near the dog’s eyes, rear end or mouth area, removal is also often recommended.

If the vet recommends having a skin tag removed, there are several options. Skin tags in dogs can be removed through a small surgical procedure that can be done under local anesthesia with some sedation or total anesthesia.  The choice for dog skin tag removal may vary based on its location and the over all temperament of the dog. Some vets may recommend having them removed through electrosurgery or cryosurgery.

warning cautionAbout Home Remedies for Dog Skin Tags

Many people look for home remedies for skin tags in dogs, but most of them are not safe and not recommended! We stumbled on several website offering tips on removing dog skin tags, but no, it’s not something to do at home!

For instance, veterinarian Dr. Loretta warns that yes, technically one can tie off the end of a skin tag with dental floss, apply alcohol and then cut it off with scissors, using a styptic pencil to stop the bleeding, but this can be stressful on the dog and will cause the dog to be likely screaming in pain!

Also, even though a skin tag may appear thin, it actually has a large blood vessel that bleeds and there are risks for infections. Don’t fall into the trap of thinking you can just easily remove a dog’s skin tag at home. Many have, and they have regretted it when their dogs got nasty complications.  It’s is best to have this done by a veterinarian in a sterile environment possibly with the vet using only local anesthesia.

And what about cutting off blood supply to the skin tag by tying it with dental floss if hopes of it dropping off? Even this procedure is dangerous. Veterinarian Dr. Deb warns that she has seen people with the best intentions trying to remove dog skin tags at home, only to create some nasty infections. No matter what you read, this is something that should not be done at home!

“Using floss, string, or rubber bands in this way is one of the worst things you can do… It is literally dying and rotting off the body.  Who thinks this is a good thing?  There is a big risk of infection or having more tissue than desired affected.  In the case of a mass or polyp, you leave the base in the skin so it has a chance of regrowing.  In order to completely resolve the problem you have to cut away the attached skin, not just remove the dangling part.” ~Dr. Chris Bern

Disclaimer: this article is not meant to be used as substitute for veterinary advice. If your dog has a lump, bump or growth, please see your vet for proper diagnosis and treatment.

References:

  • Merck Veterinary Manual, Connective Tissue Tumors, retrieved from the web on November 21st, 2016
  • A Vet’s Guide to Life, Dental Floss Doesn’t Remove Skin Tags, But Thanks For Trying, November 21st, 2016

Photo Credits:

Wikipedia, Creative Commons, Jack Russell terrier sitting and tilting her head, Writ Keeper

 

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I am Your Dog’s Meninges

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Your dog’s meninges are structures your dog may hopefully never have a problem with, but as with other dog body parts, there are always some fascinating things to discover. For instance, did you know that your dog’s brain, on top of being protected by the skull, is also protected by several layers of tissue? These layers of tissue are basically your dog’s meninges. Meninges have several functions and just as other dog body parts they are predisposed to medical conditions and problems. So today, let’s discover more about a dog’s meninges, what their purpose is and when things go wrong.

dog-meningesI am Your Dog’s Meninges

Hello, it’s your dog’s meninges talking! Our name comes from the ancient Greek word “meninx” which means membrane. As our name implies, we are membranes that envelop your dog’s brain.

Imagine your dog’s brain as being an onion while we are the layers. There are three layers of us actually covering the brain: the dura mater, the arachnoid mater and the pia mater. Let’s take a closer look at these layers individually, shall we?

Coming from the Latin word for”tough mother,” the dura mater is a thick membrane that is found closest to the skull.

The arachnoid mater, discovered in 1664 by the Dutch anatomist Gerardus Blasiusm, is the layer that is sandwiched in the middle. Its name derives from the the Greek word “Arachne” (“spider”) because of its spider-web like appearance.

Finally, the last layer is the pia mater, coming from the Latin word for “tender mother.” This is the most delicate membrane. This structure adheres to the surface and contours of the brain and spinal cord.

In between the layers of the arachnoid and pia mater, there is a space that is filled with cerebrospinal fluid.

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We Protect the Central Nervous System.

As you can imagine, we play a protective role. Together, we protect your dog’s central nervous system including the brain and spinal cord. The dura mater is quite thick, and as the name implies,  the”tough mother” acts like a mother protecting her child (the brain.) The arachnoid mater provides also provides cushioning for the central nervous system while the pia mater on the other hand, contains blood vessels and small capillaries which are meant for providing nourishment to the dog’s brain.

When Things Go Wrongveterinary

We are susceptible to the effects of trauma. When the trauma is forceful enough, affected dogs may develop a subrachnoid hemorrhage, meaning that there is bleeding under the arachnoid. A hematoma, a collection of blood from torn veins, may also form between the arachnoid layer and the dura mater layer.

As with other structures, we also prone to getting inflamed. Fortunately, though this doesn’t happen as often as in other body parts courtesy of the protective barriers of the nervous system such as the blood brain barrier.

However, when these barriers weaken and we do get inflamed, the condition is known as meningitis. This inflammatory condition can be caused by viruses, protozoa, rickettsia, and fungi. Affected dogs develop an elevated temperature, neck pain, muscular spasms and rigidity. Left untreated, meningitis can progress and cause serious neurological problems such as seizures, paralysis and even death.

In some cases, we can also develop tumors, and these are referred to meningiomas. Meningiomas are likely the most common cause of seizures affecting dogs over the age of six, explains veterinarian Wendy C. Brooks.  On top of causing seizures, these tumors can cause a dog to walk in circles, drag toes, and walk in a drunk-like gait. Since, most menangiomas in dogs develop in the front part of the skull, where the olfactory lobes are located, an altered sense of smell may also occur.

Meningioma tumors grow from the skull inward, which makes them more advantageous for surgical removal compared to growths set deep in the brain. Not all meningiomas are malignant, actually most tend to be benign, meaning that they do not spread to other areas. However, any growths in this area can be problematic, considering the limited amount of space within the dog’s skull. For this reason, prednisone is often prescribed to reduce the  problematic swelling.  Anti-seizure meds are also often prescribed, but these are only palliatives, a more definitive treatment involves surgical removal of the growth and/or radiation therapy.

As seen, we are quite important structures! Think about what a good job we do in preserving your dog’a brain and spinal cord! Yours truly,

Your dog’s meninges.Dog Pawprint

Disclaimer: this article is not meant to be used as a substitute for veterinary advice. If your dog is sick, please see your vet for proper diagnosis and treatment.

References:

  • Merck Veterinary Manual, Meningitis and Encephalitis in Dogs, retrieved from the web on November 20th, 2016

 

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Six Scary Dangers of Not Picking Up Dog Poop

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Dog poop:  it’s something inevitable that comes with dog ownership, but there can be some serious risks associated with the practice of not picking up dog poop and we’re not talking about breaking the law and getting  fined. Sure, paying a fine is not pleasant, but dog poop laws are not just just there because of unsightly piles of doggy poop in the midst of a pristine yard; rather, there is much more to that. Learning more about facts about dog waste may be a yucky topic to talk about, and some risks may seem to come out straight from a horror movie, but it’s important information for both dog owners and not. So today we’ll be discovering some facts about dog waste and the dangers of not picking up dog poop.

dangers-of-not-picking-dog-poopHookworm Larvae Penetrating Feet

If you are one of those dog owners who loves to walk barefoot in your yards, here’s a spoiler alert: after reading this, you might not want to ever walk without shoes again. Hookworms are zoonotic parasites, which means that they can passed along to humans.

The larvae of these pesky parasites are known for causing a skin infection that it referred to as “ cutaneous larva migrans.”

How do people get this infection? A dog infected by hookworms will pass several hookworm eggs in their stools. If the poop is not disposed of in a timely matter, the eggs will hatch into larvae that contaminate the soil.

To get infected, all it takes is to walk barefoot on this contaminated soil and the larvae will burrow into the skin.

According to the Centers for Disease Control, puppies and kittens are most commonly infected with hookworms, and children playing or walking barefoot in the area where dogs or cats frequent, are at risk for this condition.

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“Wearing shoes and taking other protective measures to avoid skin contact with sand or soil will prevent infection with zoonotic hookworms. Routine veterinary care of dogs and cats, including regular deworming, will reduce environmental contamination with zoonotic hookworm eggs and larvae. Prompt disposal of animal feces prevents eggs from hatching and contaminating soil — which makes it important for control of this parasitic infection.”~Centers for Disease Control

idea tipDid you know? Hookworm infections are most prevalent in the coastal areas of the United States from southern New Jersey to the Florida Keys and then from along the Gulf of Mexico to Texas. (Source DVM360)

Roundworm Larvae in the Eyes

dog-diggingAnother pesky parasite that may be found in dog feces are roundworms (toxocara canis). Roudworms, like hookworms, are zoonotic parasites, meaning that they can be passed to humans. The term toxocariasis is used to depict the infection caused by parasitic roundworms.

How do people get this infection? Roundworms are found in the digestive tract of puppies and dogs. A puppy or dog infected with roundworms will shed the eggs in their feces. When the dog’s poop isn’t picked up in a timely manner, the eggs are released into the soil. Children or adults who handle the soil and do not wash their hands, may ingest the eggs if the dirt is accidentally swallowed.

While in dogs roundworms tend to stick to living in the dog’s intestinal tract, when they infect humans they behave in different ways.

Young children are more at risk for a complication known as ocular toxocariasis, where roundworm larvae migrate to the eye which can cause inflammation and even vision loss. On top of that, the larvae may also migrate to organs such as the nervous system and liver, a condition known as visceral toxocariasis which may cause vague, systemic symptoms such as fatigue, fever, coughing and abdominal pain.

“In most cases, Toxocara infections are not serious, and many people, especially adults infected by a small number of larvae (immature worms), may not notice any symptoms. The most severe cases are rare, but are more likely to occur in young children, who often play in dirt, or eat dirt (pica) contaminated by dog or cat feces.”~Centers for Disease Control

idea tipDid you know? Statistics show that in the United States almost 14 percent of the population has been infected with Toxocara and children and adolescents under the age of 20 are the most likely to get infected. (Source: CDC) In the United States toxocaral larva migrans is known for causing hundreds of cases of unilateral blindness, and an uncountable number of cases are found to cause less permanent forms of illness in children. (Source DVM360)

dogg-poopGiardia Cysts in the Digestive System

Giardia is another pesky parasite that may affect humans, but the Centers for Disease Control report that risk of contracting giardia from a dog is rare because the type of Giardia known for infecting humans is different from the type that infects dogs and cats. However, rare doesn’t mean a person should keep his guard down and take unnecessary risks.

Here’s what happens with this parasite. Dogs are exposed to giardia, a protozoan parasite, when they ingest the infected cysts found in another animal’s feces or water that has been contaminated by feces.

Once the cysts reach the dog’s small intestine, they shed the active form of the parasite which attach to the walls of the dog’s intestine where they settle and start reproducing. At some point, the active forms of the parasite encase themselves into cysts once again and are evacuated along with a dog’s feces.

How do people get infected? In order for people to get giardia from their dogs, they would have to get in contact with water, grass or soil that has been contaminated with dog feces which contains the cysts. Another way dogs can give giardia to humans, is if the dog licks his behind and then licks a human who fails to wash his hands. Symptoms of giardia infection includes diarrhea, gas, stomach pain, greasy stools that float and possibly, nausea and vomiting.

“Anything that comes into contact with feces (poop) from infected humans or animals can become contaminated with the Giardia parasite. People and animals become infected when they swallow the parasite…Wear gloves when gardening to reduce the risk of coming into contact with infected feces (poop) or soil. Remove feces promptly and put them in a plastic bag.”~(Source CDC)

idea tipDid you know? Another similar condition to giardia is cryptosporidium, a protozoan parasite known to infect rodents, calves, dogs, cats and people. As other diseases listed in the article, transmission from dogs to humans occurs through fecal contamination. Mostly affected people are immunocompromised people, such as those affected by HIV/AIDS, who may develop severe diarrhea that never resolves and can even become fatal, explains veterinarian Dr. Arnold Plotnick.

Campylobacter Bacteria in the Stomachdog toilet bowl

Sometimes, conditions transmitted from the stool of dogs come from bacteria rather than parasites or protozoans. In this case, we’re talking about campylobacteriosism, an infectious conditon caused by campylobacter bacteria. Dogs get infected by getting in contact with contaminated food or water or from the feces of ill animals. The most common type of campylobacter affecting humans  that comes from dogs is campylobacter jejuni.

How do people get it? Humans may get the disease from ingesting the juice of raw chicken meat or using a contaminated cutting board to chop salads, but also from contact with the stools of an infected dog or cat. According to the Centers for Disease Control, it just takes fewer than 500 organisms to make a person ill with campylobacter.

Campylobacteriosis in humans causes  diarrhea, cramps, nausea, vomiting, stomach pain, and fever, generally 2 to 5 days after getting in contact with the organism.  In people with a compromised immune system, campylobacter can cause a serious, life-threatening infection. As always, it’s advised to pick up dog feces and wash hands with soap and water afterwards.

dog eatingSalmonella Germs in the Digestive Tract

Most people have heard about salmonella, the germ that’s known to be found in raw meats and eggs, but not many people know they can get it also from dog feces. In 2012, there was a recall of multiple brands of pet foods by Diamond Pet foods, and back then it was linked to many people getting sick. Here’s a little summary of how this condition affects people and dogs

Dogs and cats may get ill from consuming foods that are infected with salmonella. The infection causes typical salmonella symptoms such as bloody diarrhea, lethargy, fever and even vomiting. Not always though infected dogs show symptoms.

How  do people get it? Salmonella is transmitted from dogs to humans and humans to humans from the fecal oral route. The dog sheds salmonella germs in the stools, and, according to the CDC, the dog’s stool may carry them from 4 to 6 weeks after the infection. As always, dog owners should pick up their dog’s poop and people who interact with the dog should always wash their hands with soap and water after handling and feeding the dog.

Wash your hands as directed in the handwashing instructions. Clean up after your pet. If you have a dog, use a plastic bag to pick up the stool, and clean up the stool while on walks or from the yard and dispose of the stool in a tightly sealed plastic bag.~Centers for Disease Control

dog meat eatingEchinococcus Larvae in The Liver

As if it wasn’t enough, there are also pesky parasites that may be interested in inhabiting the human liver or lungs. In this case, we’re talking about tapeworms of the genus Echinococcus.

Sheep, goat, moose, caribou and other animals act as intermediate hosts that harbor the eggs which hatch in their small intestine. Once hatched, the larvae migrate to various organs, especially the liver and lungs where they become a cyst.

Dogs are then fed the cyst-containing organs of these animals and become infected as well. In Canada and Alaska, the practice of feeding dogs the viscera of moose and caribou may lead to infections in dogs that are then transmissible to humans. In other areas such as California, Utah, New Mexico, and Arizona, the practice of feeding the viscera of sheep was also found to infect dogs.  Another form of echinococcosis may infect dogs when they eat infected wild rodents.

How do humans get infected? Humans get infected by accidentally swallowing the eggs of Echinococcus that may be found in the  soil, water o vegetables that have been contaminated with infected dog feces.

Once ingested, the  larvae may cause growths in the liver or other organs. Affected humans may feel generalized pain in the chest and abdomen, nausea, vomiting and coughing may take place.  In some cases, allergic reactions and even death may occur. While this condition remains quite rare, there is a potential for a more serious public health problem considering that domestic dogs are becoming more involved in the life cycle, explains veterinarian Peter M. Schantz.

 “Humans can be exposed to these eggs by “hand-to-mouth” transfer or contamination. By ingesting food, water or soil contaminated with stool from infected dogs. This might include grass, herbs, greens, or berries gathered from fields. (Source CDC)

warning cautionWhat Dog Owners Can Do

As seen, these conditions are scary enough to deter dog owners from leaving poop around. Those pooper scooper laws are therefore in place for some very good reasons that go far beyond the cosmetic appeal of lawns, public parks and sidewalks.

On top of picking up dog poop, dog owners can lower the chances for zoonotic diseases by having the feces of puppies and dogs routinely checked by a vet and by de-worming accordingly.

Children should be supervised and not allowed to play in areas that are soiled with dog feces. They should be warned to never eat dirt. And of course, hands should  always be washed with soap and water after handling dirt and playing with dogs.

Disclaimer: this article is not meant to be used as a substitute for professional medical or veterinary advice. If your dog is sick, please see your vet. If you, your child or a family member is sick, please see your medical provider.

References:

  • Centers for Disease Control, Giardia, retrieved from the web on  November 20, 2016
  • Centers for Disease Control Toxocara Roundworms retrieved from the web on  November 20, 2016
  • DVM360, Zoonotic parasitic infections contracted from dogs and cats: How frequent are they?, retrieved from the web on  November 20, 2016

Photo Credits

  • Flickr Creative Commons, John Collins, DSC_3594 (CC BY 2.0)
  • Flickr, Creative Commons, Lulu Hoeller, Dog Drinking Toilet, Every dogs dream – a working toilet fountain in the back yard, CCBY2.0

 

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Facts about Mast Cell Tumors Dog Owners Should Know

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There are various types of tumors that affect dogs, but there is one in particular, the mast cell tumor, which can behave quite erratically and that deserves a dog owner’s attention. Dog owners should keep their vigilant antennas up and pay attention when petting and grooming their dogs as these tumors are not only quite common but also quite unpredictable in nature. Mast cell tumors, also known as mastocytomas, are one reason why, even the most innocent looking bump or lump should be checked out by a veterinarian. This is why it’s never really a good idea to take a wait and see approach with any lumps and bumps, unless a veterinarian has determined that it’s safe to do so. So today, let’s take a look at some surprising facts about mast cell tumors in dogs.

mast-cell-tumorMast Cell Tumors are Copy Cats…

Mast cell tumors in dogs are often referred to as “the great imitators,” why is that? Mast cell tumors gain this reputation from the fact that they can clinically resemble many other types of dog skin tumors. (See pictures for an idea)

Mast cell tumors may therefore look like an innocent bump, a fatty mass under the skin, an ugly ulcerated mass or a bug bite. You name it! Mast cell tumors in dogs can also be smooth, bumpy, solitary or in groups and they may be present on the skin or underlying tissues.

This is again why, one can’t never say what a mass really is until it gets checked out. However, despite having a variety of clinical appearances, if one must describe how a mast cell in a dog looks like on average, a mast cell tumor  can be described as a hairless, pink, raised mass that prefers to show up on the dog’s torso and legs, explains  Steven Neihaus, a board-certified veterinary surgeon.

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“Mast cell tumors can occur anywhere on the body. Approximately 50% occur on the trunk, 40% on limbs, and 10% on the head. ” Source, DVM360

 

And They Can Play Peek-a-Boo too.mast-cell

Dog mast cell tumors can be quite unpredictable tumors. For instance, some mast cells tumors may have a history of shrinking for some time and then swelling up again.

The shrinking may lead dog owners to assume that the growth is something that is getting smaller which may cause them to delay treatment. Then, after a while they get a wake-up call once the growth starts swelling up again.

This history of shrinking and then swelling is due to the mast cell tumor’s tendency to degranulate and release histamine, explains Tracy Geiger, a board-certified veterinarian specializing in internal medicine.

 

mast-cell-cancerMast Cell Tumors Release Substances…

Mast cell tumors don’t just sit there all day long doing nothing. These tumors originate from the bone marrow but then finish up maturing in the tissues of a dog’s body and this can includes skin, digestive tract and respiratory tract.

Once stimulated by the immune system, mast cells tumors release their granular contents along with several chemicals and these may include histamine, proteoglycans, neutral proteases (enzymes that break down protein) and chemotactic growth factors.

Histamine in particular, is basically the same stuff that causes an area of the skin affected by a bee stings to become red, inflamed and painful.When all these chemicals are released, they can, not surprisingly, wreck quite some have havoc on a dog’s body.

That Can Cause Complicationsveterinary

As mentioned, mast cell tumors are quite insidious in nature causing a variety of problems when they release chemicals.

Among dog mast cell tumor complications, at a skin level, recurrent swelling may occur due to degranulation and associated release of histamine, while local bruising, this time from the release of heparin, may be present as well.

When mast cells tumors release histamine into the dog’s bloodstream, they may trigger the dog’s stomach lining to produce too much acid and this may lead to a decrease in appetite, nausea, lip smacking, drooling and vomiting, explains veterinarian Dr. Dressler.

Because of these dog mast cell tumor complications, anti-acids are often prescribed to manage the excess acid production, while antihistamines are used to block the  release of histamine allowing the body a better chance of coping with the high histamine levels. Both cancerous and non-cancerous forms of mast cell tumors may release histamine.

” Dogs can also develop signs associated with the release of toxins from the malignant mast cells. For example, up to a quarter of dogs with mast cell tumors also have stomach ulcers due to histamine release.” ~Merck Veterinary Manual

dog-mast-cell-tumor-cellsThey Can be Quite Easily Diagnosed

In the case of a suspected lump or bump, it can be aspirated with a fine needle to determine whether the growth is cancerous or not. The needle aspiration is done with a small gauge needle and shouldn’t be painful hence, the term “fine needle aspiration.”

The fine needle aspirate cells can then be evaluated under a microscope (cytology) in house or  the sample can be sent out to be evaluated by a pathologist.

Under a microscope, the sample typically shows a large number of mast cells which is enough to make a diagnosis of mast cell tumor. Mast cells show up as purples granules that contain histamine.Once mast cell tumor is confirmed, a surgical biopsy is needed to discover the grade of the tumor.

“Diagnosis can often be made with a needle aspirate, which collects some cells of the tumor with a needle, and the cells are examined under the microscope. The granules have distinct staining characteristics leading to their recognition. An actual tissue biopsy, however, is needed to grade the tumor and grading of the tumor is crucial to determining prognosis.”~Dr. Wendy C. Brooks

But Removal Requires Wide Marginsdog-surgery

If you think that surgery to remove a mast cell tumor involves just simply removing only the the lump or bump, think again.

In order to get rid of this pesky tumor, wide margins are required. Because it’s difficult to tell where the tumor begins and where it ends, a large area of about 3 inches of ‘healthy’ tissue in all directions must be removed. So this explains why dog mast cell tumor need wide margins.

Getting wide mast cell tumor margins though can sometimes be a problem depending on where the tumor is located. For instance, mast cell tumors on the neck or in the mouth may be problematic.

Should the mast cell tumors have metastasized to other areas, a combo of anti-cancer drugs may be used along with surgery and radiation. For the best treatment plan, it’s often a good idea to consult with a veterinary oncologist.

The Bottom Line

Here are some more dog mast cell tumor facts: mast cell tumors in dogs account for up to 20 percent of all tumors affecting the skin in dogs. While they may mostly affect older dogs, they can be found in dogs of any age dog. Mast cell tumors may also affect any breed,  even though certain breeds such as boxers, pugs, Boston terriers, bulldogs, bull terriers, and retrievers are known for being predisposed. As with other types of tumors, it’s important to promptly report to the vet any suspicious growth, lump or bump for the best possible outcome.

Disclaimer: this article is not meant to be used as a substitute for professional veterinary advice. If your dog has a growth on his skin, please consult with your vet promptly for proper diagnosis and treatment.

References:

  • Pet Education: Canine Mast Cell Tumors, retrieved from the web on November 19th, 2016.
  • Dog Cancer Blog, Why use stomach medication for mast cell tumors? retrieved from the web on November 19th, 2016.
  • Dog Cancer Blog, Why Benadryl For Mast Cell Tumors? retrieved from the web on November 19th, 2016.
  • DVM360,  Mast cell tumors in dogs and cats, retrived from the web on November 18th, 2016

Photo Credits:

    • Mast cell tumor on the side of a dog Joel Mills Own work, CCBY3.0
    • Mast cell tumor on the inner thigh of a dog, by Joel Mills Own work CCBY3.0
    • Mast cell tumor of the paw, Joel Mills Own work,  CCBY3.0
    • Mast cell tumor cytology Joel Mills – Own work CCBY3.0

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Four Different Ways Dogs Learn

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How do dogs learn? When it comes to learning, dogs can be taught in several ways. Dogs do not come with an operating instruction manual nor with a troubleshooting guide. It’s up to us to understand how to teach a dog so that the dog can learn. It is only by understanding the underlying machine that motivates dogs that we can really understand the engineering behind the art of dog training. Understanding how dogs learn is not difficult, nor should it be intimidating for dog owners. Today, we’ll be taking a peak at four ways dogs may learn that a particular behavior has a consequence. By fully understanding dog learning theory, basically, the four consequences that can take place when dogs interact with their owners and their environment, you can make the learning process easier. Also, you can identify which dog friendly training methods to use so that you can better bond with your companion.

 how-dogs-learnLife is About Consequences

If we take a look at life, we will notice how many things we do are driven by consequences. If we go to work, we get paid, if we put on mosquito spray we make mosquitoes go away, if we make many mistakes, we fail a test, if we are rude to customers, they may leave and perhaps  even never come back again.

In other words, things happen because we do things, and dogs as well learn the relationship between their actions and their consequences. In the world of learning theory, this is known as “operant conditioning” that is, learning (conditioning) based on the ways we “operate.”

Thorndike once said: “responses that produce a satisfying effect in a particular situation become more likely to occur again in that situation, and responses that produce a discomforting effect become less likely to occur again in that situation.”

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A Word About Reinforcement

dog-pawing-at-you

Reinforcement is a behavior change process that takes place when the likelihood of a behavior increases in rate.

Reinforcement encourages behaviors and therefore it increases the likeliness of the behavior occurring.

Reinforcement can occur as the addition or subtraction of stimuli.

In order to be effective, reinforcement must occur in a timely manner and it must be contingent upon the behavior occurring.

For reinforcement to occur, the reinforcing stimulus should be added or subtracted during or immediately after a behavior.

When it comes to how dogs learn, there are two scenarios where dogs are more likely to increase and strengthen behaviors: positive reinforcement and negative reinforcement.

idea tipDid you know? Reinforcement can sometimes be generated directly by the behavior itself within the dog (self-reinforcement), rather than being socially mediated by the interactions between dog and trainer.

dog lip lickingA Word About Punishment

Punishment is a behavior change process that takes place when the rate of a behavior decreases in rate.

Punishment suppresses behaviors, and therefore, it decreases the likeliness of the behavior occurring.

Punishment can occur as the addition or subtraction of stimuli.In order to be effective, punishment must occur in a timely manner and it must be contingent upon the behavior occurring.

For punishment to occur, the punisher stimulus must be added or subtracted during or immediately after a behavior. When it comes to how dogs learn, there are two scenarios where dogs are more likely to decrease and weaken behaviors: positive punishment and negative punishment.

Confused by all this? Let’as take a closer look  at how dogs learn with some practical dog operant conditioning examples.

1) Positive Reinforcement11

Also known as added reinforcement, in this case, we are talking about the addition (thus, the term positive) of a stimulus, during or immediately following a response.

In order to be considered positive reinforcement, there must be the addition of a stimulus that increases the probability of the behavior repeating (reinforcement).

For sake of an example, a cookie (the stimulus) is given to the dog (added) the moment the dog sits for the purpose of increasing  and strengthening the sitting behavior (reinforcement). As the dog learns the association between sitting and getting the cookie, the dog will soon be sitting more and more.

*Non socially mediated example in a dog’s environment: a dog has found some tasty rabbit poop by the fence line. The behavior of visiting the fence line should therefore become more frequent when the dog is hungry.

idea tipRemember: it’s up to your dog to determine what he considers to be reinforcing. If you use your dog ‘s kibble and your dog is a finicky eater to start with, he might find the fact of being offered kibble not reinforcing enough to make sitting repeatedly for it worth it. In such a case, you may have to experiment with high-value treats or other rewards, to get the sitting behavior to increase. Rather than speculating on whether your dog likes something or not, sometimes it’s far more productive to evaluate whether a behavior is increasing or not.

2) Negative Reinforcement

22Also known as subtracted reinforcement, in this case, we’re talking about the the removal (negative) of a stimulus, during or immediately following a response, that increases  the probability of behavior (reinforcement).

In order to be considered negative reinforcement, there must be the removal of a stimulus that results in an increase in the probability of the behavior repeating (reinforcement)

For sake of an example, pressure on the dog’s back (the stimulus) is removed (subtracted) the moment the dog sits for the purpose of increasing (reinforcing) and straightening the sitting behavior. As the dog learns the association between sitting and removal of pressure from his back, the dog will soon be sitting more and more.

*Non socially mediated example in a dog’s environment: a dog retreats to his dog house when he feel the heat of the sun burning on his back. The behavior of retreating to dog house should therefore become more and more frequent when it’s hot.

idea tipRemember, it’s up to your dog to determine what he considers reinforcing. If your dog is really, really eager to be touched, even if that includes, pushing on his back, his sitting behavior will likely not increase. The behavior will increase only if the dog perceives the pressure as unpleasant and wants to escape it. Same with the example of the sun, in order to retreat to the dog house the dog must find the heat unpleasant. A Nordic dog with a heavy coat may therefore retreat more  frequently or with minimum heat compared to a Chihuahua.

333) Negative Punishment

Also known as subtracted punishment, in this case, we’re talking about the removal (negative) of a stimulus during or immediately following a response, that decreases (punishment) the probability of a behavior.

In order to be considered negative punishment, there must be the removal of a stimulus that results in the decrease in the probability of the behavior repeating (punishment).

For sake of an example, every time a dog owner comes home from work, his dog greets her by jumping up on her. The owner therefore decides to implement a new strategy. He asks his dog to sit, but if his dog fails to sit and jumps on him, she says “too bad!” makes a quick about face and exits the room contingent upon the jumping behavior.

*Non socially mediated example in a dog’s environment: every time a dog pounces nearby a wild animal, the wild animal retreats in a hole. With time, the behavior of pouncing may reduce and stop as the dog plans a more effective hunting strategy.

idea tipRemember: it’s up to the dog to determine whether he considers the removal of a stimulus punishment. If the dog is home alone all day and  socially motivated, there should be a significant decrease in the rate of jumping as the dog doesn’t like to be left alone. If the owner is home all day though, and the dog is often corrected for doing things which creates stress, the dog may perceive the owner’s absence as reinforcing, as he gets a feeling of relief.

4) Positive Punishment44

Also known as added punishment, in this case, we’re talking about  the addition (positive) of a stimulus during or immediately following a response, that decreases  the probability of behavior (punishment).

In order to be considered positive punishment, there must be the addition of a stimulus that results in the decrease in the probability of the behavior repeating.

For sake of an example, when Rover is asked to sit and jumps on this owner instead, the owner scolds the dog by pointing his finger to him and saying in a firm, tone of voice “bad dog!” right the moment the dog jumps.

*Non socially mediated example in a dog’s environment: a dog approaches a skunk and the skunk emits a powerful mixture of sulfur-containing chemicals which causes the dog’s eyes to burn and drooling. Afterward, the dog’s behavior of approaching the skunk reduces and the dog stays at a safe distance.

idea tipRemember, it’s up to the dog to determine whether the added stimulus is punishing enough to make the behavior of jumping stop. If the dog in question is a soft dog who is also frightened by his owner when he uses a firm voice, the behavior of jumping may reduce and eventually stop. If the dog has been alone all day and is eager to greet the owner, even being scolded may be perceived as music to ears, so the scolding may be actually reinforcing if it gives him a slice of attention. In this case, the behavior will like not stop.

As seen, dogs can learn from us and their environment in several different ways. One important question one must ask is: is the frequency of the dog’s behavior increasing or decreasing? This can reveal a whole lot about the whether the training is working or not. Among the four quadrants of dog training though, only two have a reputation for being “dog friendly”: positive reinforcement and negative punishment. Negative reinforcement and positive punishment involve the use of aversives. Here are 13 negative effects of aversive dog training, a worthy read to understand why many behavior professionals frown on these. Well, this is not all folks! Dogs learn in other ways, but we will see them in another article or two. So stay tuned, for part 2 on how do dogs learn.

“The American Veterinary Society of Animal Behavior recommends that veterinarians identify and refer clients only to trainers and behavior consultants who understand the principles of learning theory and who focus on reinforcing desirable behaviors and removing the reinforcement for undesirable behaviors. ” AVSAB Position Statement

So to recap:
quadrants-of-dog-training
References:

  • Excel-Erated Learning: Explaining in Plain English How Dogs Learn and How Best to Teach by Pamela J. Reid, James Kenneth Publishers (July 25, 2011)
  • How Dogs Learn (Howell reference books)by Mary R. Burch, Howell Book House; 1 edition (April 21, 2008)

Photo Credits:

  • Flickr Creative Commons, TheRebelRobin Graduation! Blaze graduated from Dog Training 101, CCBY2.0

What’s Up with Dogs Swallowing Kibble Without Chewing?

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Let’s face it: when it comes to eating, dogs are quite fast eaters, often swallowing their kibble whole without chewing as if there’s no tomorrow, what gives? The behavior is actually not unusual; indeed, on Puppy Planet, there are likely more dogs eating fast than eating slow if ever some statistics on dog eating times were ever collected. Slow dining, as to savoring a morsel at a time, is something not popular in the world of canines, but dogs seem to have their own good reasons for wolfing down their chow.

dog-eating-fastA Look Back 

If your dog is swallowing his kibble whole without chewing don’t be too fast to label him as greedy, turns out dogs have some good reasons for their behavior and it stems from their evolutionary past.

In the old days, dogs were not fed bags of kibble from shiny bowls. A dog’s ancestors were hunting and scavenging for food and eating fast was necessary for several reasons.

Feast or famine was a real thing, so there were times with little to no food and then there were times after a hunt where there was an abundance of food. After going through lean times, a dog’s ancestors were eating fast because they were very hungry. However, eating fast wasn’t only because of that.

If in the old days a dog’s ancestors were eating slow, this could have meant losing access to their food. Most likely if the food wasn’t gobbled up in a timely manner, another canine or some other competitor animal would have gladly finished it up. On top of that, eating slow in the wild is risky business considering that it puts animals in a vulnerable position which can mean becoming dinner to other larger predators!

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idea tipCurious fact: Statistics show that ravens get to eat more meat from a wolf kill, than the wolves themselves, explains Toni Shelbourne in the book “The truth about wolves and dogs.” No wonder why wolves are eager to eat fast, hence the term “wolfing your food.”

Designed for Fast Eatingdog-eating-meat

Even if we look at dog anatomy, we will notice a body that is designed for fast eating.

Molars are teeth that are used for grinding. In herbivores, like the horse, the canine teeth are small or non-existent, while the molars are broad and flat because they are plant eaters and must grind grains and plant materials with their side-to-side jaw movements.

In omnivores, like us humans, since both meat and plants are consumed, teeth include a combination of incisors, canines, pre-molars and molars used for grinding also in a somewhat sideways motion.

Dogs, even though not obligate carnivores like the cat, have overall a body designed to eat meat. A dog’s teeth are designed for ripping and tearing meat and their jaws mostly move in an up-and-down motion. Dogs also don’t have flat molars as herbivores and omnivores do. Dogs are therefore not designed to chew as much as some other animals and that’s a main reason why they end up swallowing their kibble whole.

On top of not having molars designed for grinding, dogs do not produce amylase, an enzyme meant to digest starches, in their saliva. This is because food doesn’t stay long in their mouth, and therefore the amylase isn’t necessary to start digestion, explains veterinarian Ernie Ward in the book “Chow Hounds: Why Our Dogs Are Getting Fatter -A Vet’s Plan to Save Their Lives.” Instead, dogs produce amylase in their digest tract so starches can be digested there at their own leisure. This is just one of the many things that differentiate dogs from wolves.

Finally, dogs might not feel much compelled to eating fast because of their taste buds. With only about 2,000 taste buds on their tongues, compared to our 9,000, why would dogs feel motivated to savor their food if the flavor is going to be just bland?

” Human saliva contains an enzyme called amylase, which starts breaking down starches as soon as food hits the mouth. Dog drool doesn’t have this advantage, but dogs do excrete amylase from their pancreases, allowing for the digestion of starches in the gut.”~Live Science

idea tipDid you know? One of the reasons why dogs do not get cavities as humans do, is perhaps because of how their teeth are designed. Since dogs have fewer pits and fissures on the surface of their teeth, cavity causing bacteria and food particles are less likely to stick to them as they would on teeth with many indentations. Source: Cummings School of Veterinary Medicine

feeding-the-dogsA Word About Multi-Dog Households

Eating fast is particularly common in households with multiple dogs. The reason being that dogs may feel more competitive when around other dogs and this may cause them to feel more compelled to gobble up and swallow their kibble without chewing as fast as they can.

As their food is being prepared, there is a strong build in anticipation as all the dogs eagerly wait for their bowls to be filled. Then when it’s time to eat, it’s almost sort of like a race against time between the dogs as to who finishes first.

The dogs in this case are likely concerned about other dogs finishing  up first and approaching their bowl. It might have happened in the past that a dog who finished first got near their bowl and these dogs may have “learned their lesson” and sped up their eating.

In these cases, some dog owners find that putting more distance between the dogs or feeding them in completely separate areas where they can’t see or hear each other can help slow them down. This makes for a more relaxed feeding.

” If you have other pets in the house, including other dogs, your canine pal may want to insure that he gets his share before someone else helps himself. For other dogs, it may not be the actual presence of a second dog or, say, a cat but a throwback to his days as a puppy — a subconscious reminder of having to compete with his littermates for his mother’s milk.”~Tufts University

Underlying  Health Problemveterinary

If your dog has suddenly started gulping down his food like there’s no tomorrow, sometimes this can be indicative of a health problem.

For instance, a dental problem can lead to pain chewing and therefore a dog may decide that’s it’s less painful to just swallow the kibble whole. Dogs who have misaligned teeth (a malocclusion) may also swallow their kibble whole, but this is generally something that shouldn’t happen out of the blue.

If a dog suddenly develops ravenous appetite this is something that should be investigated as well. Conditions that could cause a voracious appetite in dogs include diabetes and Cushing’s disease, explains veterinarian Dr. Fiona. 

idea tipDid you know? The medical term for increased consumption of food  is “polyphagia.” The term comes from  polys which means “much” and phagein which means “to eat.”

dog-eating-too-fastAssociated Health Risks

While it’s natural for dogs to be predisposed to be swallowing their kibble whole, this practice can have several health repercussions.

If you own a large, deep chested dog, eating too fast can predispose him to develop life threatening bloat from swallowing too much air. The excess air causes the stomach to swell up and it risks twisting on itself, a condition that’s known as gastric dilatation volvulus. While bloat affects mostly large dogs, medium dogs and smaller dogs can also be affected at times.

Another risk associated with dogs swallowing their kibble whole is choking. This is something that can be worrisome obviously as it can turn life threatening.

On a lighter note, dogs who eat quickly and swallow their kibble may develop digestive problems under the form of hiccups, burping, flatulence, vomiting and regurgitation. When the dog eats too fast, the stomach cannot keep up with the workload and may just bring the food back up within a few minutes.

A Few Tipsdog-slow-down-eating

A lot of dogs swallow their kibble whole and this generally isn’t much concerning as most dogs can swallow their kibble whole without getting ill, what is concerning though is eating too fast. Dogs who swallow their kibble whole and eat fast may benefit from learning to slow down a bit. This can be accomplished in several ways. Here are a few tips:

  • You can try feeding multiple times a day so that your dog gets to eat a smaller amount at a time.
  • You can place some tennis balls in his food bowl so he’s forced to eat around them.
  • You can try scattering his food on a cookie sheet, which makes it harder for him to grasp much at once.
  • You can hide his food inside a Kong or other interactive toy.
  • You can place his food in small amounts in several food bowls.
  • You can invest in a Brake-Fast bowl or other bowl made for fast eating dogs.
  • You can play fun games such as making a path of kibble or hiding his kibble in several areas of the house.

References:

  • VCA Animal Hospitals, Fast Eating Can Lead To Serious Problems in Dogs, retrieved from the web on November 15th, 2016
  • Tufts Your Dog, Does Your Dog Eat too Fat? retrieved from the web on November 15th, 2016

Photo Credits:

  • Flickr Creative Commons, Georgie Pauwels, Dinner for One, CCBY2.0
  • Flickr Creative Commons, PROWonderlaneRose, a puppy, chewing on a bone, south U District near the Montlake Cut, Seattle, Washington, USA CCBY2.0
  • Flickr Creative Commons, Antique Dog Photos, Feed the dogs, CCBY2.0
  • Flickr Creative Commons, BuzzFarmers Dog played with his food. CCBY2.0

 

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Dog Word of the Day: Flooding

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In the world of dogs, there are a variety of terms that may seem to be quite technical, but technical doesn’t necessarily have to mean difficult to understand. Don’t be discouraged by intimidating terms and don’t let them get into the way of learning more about your canine companion! The concept behind several terms is often straightforward and quite easy to comprehend once explained in simple words. Flooding is one term that is often used by dog behavior professionals, but it is a term that is very easy to understand once explained in layman’s terms. On top of that, learning more about flooding in dog psychology can help you better manage your dog’s environment so to avoid exposing him to overwhelming situations.

dog-floodingFlooding in Dog Psychology

The term flooding is often used by dog behavior professionals, but this term actually stems from a form of behavior therapy that has been used in human for quite some time.

To be exact this psycho-therapeutic technique was based on concepts crafted by psychologist Thomas Stampfl back in 1967. Flooding has therefore been used as a strategy for treating anxiety disorders and phobias for quite some time and it is still used in behavior therapy today.

Phobias are unreasonable fears to non-threatening stimuli and situations that cause a disproportionate sense of mortal danger that gets in the way of everyday life.

As much as flooding has been used for many years and may appear as a fast way to rid people of fear, therapists have been questioning whether its use is ethical considering that its application can be traumatic and there are risks for the fear to spontaneously recur.

In the world of dogs, flooding has been used as well using similar behavior therapy principles, but as in flooding in people, its effectiveness and potential for increasing fear makes it as well a questionable option.

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For this reason, flooding as a treatment plan for a fearful dogs is technique that is not recommended by many dog behavior professionals. Becoming more accustomed with the term flooding can be helpful so that you can learn how to avoid inadvertently putting your dog into a “flooding situation” and learn about alternate options to deal with your dog’s fears.

A Closer Insightscared dog

If you are terrified of spiders, would you be willing to be locked in a room full of them? If your biggest phobia is talking in front of a crowd, how would you feel if you were forced to do a speech in front of an audience consisting of  hundreds of people? And how about being tossed in a pool when you are afraid of water? Well, that’s somewhat what happens in flooding in the way it is applied to dogs.

In flooding, dogs are forced to face their biggest fears by direct, in-vivo exposure.

While avoiding fearful situations may make a person or dog feel safe and therefore feels reinforcing to do so, it ultimately doesn’t teach anything. Advocates therefore find that, by using flooding, there may be chances that direct exposure might accomplish at least something, making it worthy of trying.

The main principle behind flooding is that after feeling the panic for a while, with its associated fight or flight response, the body at some point must start going back to a state of normalcy (homeostasis).

Once the body reaches this state of reduced fear or normalcy, the person may come to realize that the stimulus or situation is not as threatening as thought. So in the case of being locked in a room of spiders, after feeling the sheer terror of the experience, the person at some point may come to realize that he is still alive and that being around those eight-legged critters is not as bad as thought after all.

scared dog fight or flightThe Problem with Flooding Dogs

While the principle behind flooding may make sense, its effects as one may imagine can be quite damaging and devastating. This method basically requires that the dog be mentally and physically exhausted.

First of all, dogs are not humans and therefore they do not understand that the therapy is meant to help them and, on top of that, they cannot self-talk to reassure themselves during the process as people are capable of doing.

During flooding, dogs may engage in strong avoidance behaviors trying to escape, and if prevented from doing so, they may get hurt or even engage in defensive behaviors which can endanger people around them.

On top of that, flooding causes loads of unnecessary stress. When using flooding, the outcomes can be two: in the best scenario, after repeated exposure, the dog may come to realize “somehow” that what he feared wasn’t that bad, or in the worst scenario, he may become traumatized with all its associated negative effects.

“The use of flooding is almost always inappropriate… exposing a fearful or fearfully aggressive dog to a stimulus of which he is afraid of but cannot escape, will make the fear worse. “~Karen Overall

An Alternative Method

Use food to create powerful associations!
Use food to create powerful associations.

Even Thomas Stampfl realized at some point that direct exposure was too traumatic to experience, and also not always an option, therefore he created what’s known as imagery exposure procedure, where his patients were exposed to their fears using an imagery technique. Dogs cannot work through their fears in this way, so what options are left?

A much better option with less risks is a behavior modification program known as desensitization (often used along counterconditioning). Desensitization is basically the opposite of flooding. Instead of fully exposing the dog to the most scary situation, the dog is gradually exposed to the least fearful situation first.

A dog owner would therefore compile a list of the dog’s triggers from the least fearful to the worst (fear hierarchy) and the dog would therefore be gradually and systematically exposed (with the help of a behavior professional) through steadily escalating steps.

The help of a professional in this case is important for correct implementation. One of the most common mistakes done in a desensitization and counterconditioning program is progressing too quickly at a rate that the dog is yet not ready for. This only paves the path towards setbacks.  As the saying goes “slow and steady wins the race” and therefore it’s best to go one step at a time.

 

References:

  • Manual of Clinical Behavioral Medicine for Dogs and Cats, By Karen Overall Mosby; 1 Pap/DVD edition (July 9, 2013)
  • Leitenberg, Harold (1990). Handbook of Social and Evaluation Anxiety. Springer. pp. 300–2. ISBN 978-0-306-43438-9.
  • Implosive Therapy Donald J. Levis Binghamton University, New York, retrieved from the web on Nov 16th, 2016.

 

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What Breed of Dog Hunts Truffles?

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There are dogs bred to search explosives, dogs bred to search illegal drugs and then you have dogs bred to search for truffles. Truffles might not be too popular in the United States, but they are quite popular in Europe such as in countries like Italy and France. And for sake of clarity, when we mention the word “truffle”we’re not talking about those delectable chocolates everybody loves, but rather those prized edible mushrooms eagerly sought out by chefs worldwide. Since truffles are not easy to come by, their prices can easily amount to hundreds even thousands of dollars which makes people eager to search for them. Truffle hunters may employ pigs to search for truffles or, more commonly now, specially trained dogs, but not all dogs are created equally for the task. So today’s trivia question is:

What dog breed hunts for truffles?

A Pachon Navarro

B Beauceron

C Petit Basset Griffon Vendeen

D Lagotto Romagnolo

The Correct Answer is: Drum Roll Please…

drum

 

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The correct answer is D, the Lagotto Romagnolo is the dog breed that hunts truffles.

truffle-hunting-dogAn Alternative to Pigs

Ah, truffles! Everybody seems to love truffles. Truffles are tubers that grow underground so it takes a good sense of smell to detect them and extract them.

A while back the domesticated pig, called “the truffle hog” was primarily used to hunt for these delicacies. While pigs are not easy to train as dogs, they are highly motivated as they naturally love truffles and are able to detect them from as deep as three feet underground.

However, using pigs has several disadvantages. For starters, pigs don’t have too much stamina, secondly, they’re not very easy to train (try to train a pig the leave it cue), and thirdly, they want to eat the truffles once they find them and no matter how valuable truffles are, you definitely don’t want to wrestle a 300-pound hog that’s highly motivated in chowing down on a truffle, explains Charles Lefevre, the president and founder of New World Truffieres. It looks like truffle hunting has therefore gone to the dogs.

 

A Matter of Trainingdog sniffing

While pigs hunt down truffles naturally because they are drawn to them, dogs need a little bit of extra training considering that truffles are things that dogs don’t really have a natural interest in…at least until you create strong associations with food.

Dogs though tend to catch on quickly once they learn that finding truffles means food. The training generally starts by training dogs to find an item that was coated in truffle oil. Criteria is then increased and the dog is asked to find the item first buried under leaves, then under rocks and then under soil.

Finally, the dog is asked to find a ripe truffle and voila’ you got a glimpse into the making of a trained truffle dog. While many types of dogs can be trained to hunt for truffles, some of them seem to excel more than others, and a sure winner in this department is the Lagotto Romagnolo dog.

lagotto-romagnolo-dog-pictureIntroducing the Lagotto

In Italy, the use of truffle hogs has been prohibited since 1985. The reason being that, in their enthusiasm for hunting truffles, pigs ended up  causing substantial damage to the truffles during their digging efforts, making them no longer an option.

Dogs are therefore the only option and the Lagotto Romagnolo surely does a great job when it comes to hunting truffles.

Coming from the Italian region of  Romagna, this dog breed’s name literally means “the lake dog of Romagna.” Lagotttos indeed were initially bred as gun dogs who retrieved downed ducks from the water. Their  wooly waterproof coats indeed were helpful for this original task. However, somewhere between 1840 and 1890 the Lagotto gradually lost its original function as a water dog.

Yet, these dogs were quite far from retiring, and their highly developed nose and aptitude for searching, made them wonderful candidates for truffle hunting and this is what most of them are employed for today. This breed’s tightly-knit coat also turned handy for hunting in the chilly and thorny woodlands during the fall-winter period when truffles are most abundant.

” A natural gift for searching and a very good nose has made the breed very efficient in finding truffles. The former hunting instinct has been modified by genetic selection; hence his work is not distracted by the scent of game.”~American Kennel Club Breed Standard

idea tipDid you know? The Lagotto Romagnolo was just recently officially recognized by the American Kennel Club. This breed indeed was just welcomed in 2015.

Photo Credits:

  • Trained pig in Gignac, Lot, France, Vayssie Robert Robert Vayssié – Own work Gignac Lot France CCBY3.0

  • A female Lagotto. Entheta – Own work Female Lagotto Romagnolo, 2½ years old CCBY3.0

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I am Your Dog’s Prostate Gland

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The dog’s body shares several similarities with humans and therefore it’s not surprising for dogs to also have a prostate gland. Of course, prostate glands are only present in male dogs, and just as in humans, it has reproductive purposes. Also, just like in humans, dogs also share some disorders that affect their prostate glands. So today, we’ll be discovering more about a dog’s prostate gland,where it is located, what functions it serves, and some disorders this body part is prone to.

dog-prostate-glandIntroducing Your Dog’s Prostate Gland

Howdy, there, it’s your dog’s prostate gland talking! My name dates back from the 1640s and derives from the ancient Greek word “prostates” which means “leader, ruler, guardian; “the one standing in front”. I am called this way because of my position at the base of the bladder, just by the dog’s rectum.

I am just a small bi-lobed gland that communicates with the dog’s urethra, a tube that carries Rover’s urine from his bladder to the outside so that he can effectively urinate on your neighbor’s mailbox.

 I am ovoid in shape and considered quite large for the size of a dog, but that’s most likely because, unlike in humans, in dogs I am the only male accessory gland. On average expect me to measure anywhere between one and two inches in diameter in a forty pound dogs.

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However, my size for a good part depends on whether your dog is neutered (had testicles surgically removed) or not. In intact males I am larger, whereas, in dogs neutered before the onset of puberty, I will just develop to a tiny budge of tissue. And if your dog is neutered when he is mature, I will instead shrink to a fourth of my former size.

idea tipDid you know? According to VCA Animal Hospital, intact Scottish terriers are known for having a prostate that is about four times greater in weight compared to other dog breeds.

dog-marriedI Help Manufacture Puppies

I play a big role when it comes to the manufacturing process of puppies. When Rover mates with his girlfriend Missy, he will ejaculate several fluids created by me in three distinct fractions: first comes the pre-sperm which consists of just a small volume of clear fluid, next comes the cloudy, sperm-rich fluid and then comes an abundance of clear prostatic fluid once the dogs are stuck in a tie. Since my ducts communicate with the dog’s urethra, expect these fluids to travel outside Rover’s body and then right into Missy. Quite a trip there, huh?

What’s the purpose of this fluid? It add volume and helps sperm travel so to successfully reach its destination (yup, talk about motility!) and it’s also believed to have some special antibacterial properties.

idea tipDid you know? When a intact male dog cocks his leg to urine mark a lamp post, urine isn’t the only thing coming out. According to Tim Glover, author of the book “Mating Males: An Evolutionary Perspective on Mammalian Reproduction” prostatic fluid is discharged as well and dogs produce quite an amount of it!

“Dogs have no other accessory sex glands and, therefore, no other source of seminal fluid; all fluid present in the ejaculate arises from the prostate. Prostatic fluid is secreted at all times, whether the dog is being used for breeding or not. Most accumulates in the urinary bladder and is voided with the urine. Some runs down the urethra and accumulates at the opening of the prepuce, forming the mass of greenish discharge that often is visible on intact male dogs. “~Dr. Peggy Root Kustritz

veterinaryWhen Things Go Wrong

While most of the problems listed below affect older intact male dogs, don’t count your blessings yet if you own a neutered dog. Neutered dogs may also occasionally suffer from prostate problems too.

Benign Prostate Hyperplasia

Just as in men, as intact male dogs start to age, I start enlarging. Yes, dogs are prone to benign prostate hyperplasia (BPH) too!  Statistics assume that 100 percent of adult intact dogs over the age of 7 will develop BPH. What causes me to enlarge are the hormonal changes associated with aging. While in men, the tell-tale sign of prostate problems is difficult urination since I end up pressing against the bladder, in dogs, I am more likely to cause painful defecation. So when I enlarge, I am known to cause poor Rover to strain and act constipated. And if you notice ribbon-like or pencil-thin stools in an intact male dog, suspect problems with me too. On top of causing trouble defecating in dogs, when I enlarge I may also cause straining during urination and sometimes I may even cause affected dogs to walk in an unusual gait, taking short steps as if walking on eggs. For persistent cases causing significant enlargement, most vets suggest neutering the dog considering that once testosterone is removed, I will shrink and things get better from there.

“As the prostate increases in size, it expands backwards in four-legged animals, that means toward the spine. If there’s significant enlargement, it can obstruct the rectum, causing straining during defecation, constipation, and even fecal impaction. Once in a while, an enlarging prostate pushes forward rather than backward, pressing on the urethra. This can cause a dog to strain while urinating.”~Dr. Karen Becker

idea tipDid you know? There is no prostate-specific antigen blood test in dogs as there is in humans, explains veterinary Betsy Brevitz. Dogs are therefore subjected to the humiliating rectal exam with the vet’s gloved finger and other diagnostic tests.

Prostate Infection

At times, I may also get infected. When this happens, the dog is said to have developed prostatitis. After BPH, this is the second most common condition of the prostate affecting dogs. It is estimated that about 45 percent of dogs will get an infection of the prostate at 7 years. How do I get infected? These infections may stem from the dog’s blood stream or from the urinary tract. Fortunately, a course of the right type of antibiotics (they must be able penetrate into the prostate gland) and for the right amount of time (often several weeks or months) will help me feel better.

Prostate Cancer

And then there is cancer, yes, this can affect me too.  The most common types of cancer affecting me are transitional cell carcinoma and prostatic carcinoma. However, the good news is that unlike in humans, cancer of the prostate is less common so on this I can count my blessings. When it happens though, prostate cancer in dogs is quite an aggressive cancer that can metastasize (spread to many organs) and wreck havoc.

idea tipDid you know? According to a study published by the August, 2007 issue of the journal “Prostate” it was found that male dogs who had been neutered had a higher risk for transitional cell carcinoma.

As seen, I am quite important for intact dogs meant for passing on their genes, while in neutered dogs, well, to put it bluntly, let’s just say I am pretty much quite useless. While many problems with me are more common in intact male dogs, consider that neutered dogs may also occasionally have problems too. So keep an eye for problems with me and report promptly to your vet upon noticing them.

Kind regards,

Your Dog’s ProstateDog Pawprint

 

References:

  • Glover, Tim (2012) Mating Males: An Evolutionary Perspective on Mammalian Reproduction Cambridge University Press, page 31. ISBN 9781107000018.
  •  Young W.C. – Sex and internal secretions, 1961, Third Edition, vol. 1, Ed. The Williams&Wilkins Co., Baltimore
  • Pet Education, Prostate Enlargement in the Dog, retrieved from the web on November 14th, 2016
  • CANINE PROSTATE PATHOLOGY GABRIELA KORODI, VIOLETA IGNA, H. CERNESCU, C. MIRCU, ILINCA FRUNZĂ, RENATE KNOP Faculty of Veterinary Medicine Timişoara Calea Aradului 119, 300645 – Romania
  • A population study of neutering status as a risk factor for canine prostate cancer. Bryan JN, Keeler MR, Henry CJ, Bryan ME, Hahn AW, Caldwell CW.Department of Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri, USA. Prostate. 2007 Aug 1;67(11):1174-81

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Tips for Dogs Scared of Stairs

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For us humans, stairs are just made out of series of steps meant to connect two floors, but for dogs, stairs can be perceived as obstacles that can also be a tad bit intimidating, especially when it comes to small-breed puppies who were never introduced to stairs before. If your dog is scared of stairs, you may often see him struggle with the desire to be re-united with you and the fear of going up or down all those steps. This can lead to approach avoidance behaviors where one moment he seems really motivated to go up or down, and the next, he backs away. Fortunately, there are several options to help dogs conquer their fear of stairs.

dog-stairsWhy are Dogs Scared of Stairs?

Dogs tend to be fearful of the unknown and this is an adaptive instinct that back in time turned handy as it prevented dogs from getting themselves into risky situations.

Perhaps the puppy you got came from a breeder who may have failed to introduce the puppies to stairs before, sending them out to their new homes without this experience or perhaps you have a rescued dog who lived in a one-story home for most of his life.

Regardless, the fact is that we perceive stairs as a series of steps to be taken one at a time, while dogs see stairs as a huge, big obstacle. When they look at a stairwell from the top, it may look like a giant steep cliff and when they look at it from the bottom it may look like an insurmountable obstacle.

Dogs therefore have an instinct to avoid things they are not familiar with. Even in the sport of agility, if you attend the first classes, you may notice how most dogs (other than the occasional Mr. Confidence) are very cautious around the obstacles and need days or perhaps weeks of training to learn how to climb an A-frame or run confidently through tunnels. For a good reason agility courses are often recommended for dogs who need a boost of confidence. Overcoming this initial hesitancy can do oodles to help tentative dogs better develop their self-esteem.

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So back to your dog, those stairs are a just another big obstacle that he is naturally wary about. On top of that, consider that dogs are not used to using their paws to walk up and down steps as most of the world they have encountered so far was always flat, therefore, they might not realize exactly how they must use their feet to climb and descend a flight of stairs. Proper paw placement is therefore an additional criteria they must get accustomed to.

But My Dog Was Never Scared of the Stairs Before!dog-scared-of-stairs

Sometimes, dogs may develop new fears and phobias even towards things they were accustomed to before. A dog’s ability to learn is never static, it is always prone to changing due to the plasticity of the dog’s brain. So just as your dog can learn new behaviors such as a new phenomenal trick, he can also learn to avoid things if for some reason he perceives them as threatening.

What may have triggered though this new fear?  Why is my dog afraid of stairs suddenly? Why won’t my dog go down stairs anymore? It could be due to various factors.

It could be that your dog tripped and stumbled, it could be he heard a scary noise as he was climbing the stairs and has started to associate it with the stairs, it could be the stairs led to an unpleasant situation such as being scolded or being given a bath (if the dog hates baths), or it could be that your dog has developed pain somewhere and walking up and down those stairs has become something he dreads. At times, vision problems may also cause a sudden fear of stairs.

As a general rule of thumb, every time a new behavior develops seemingly out of the blue, it’s a good idea to evaluate with the help of a vet whether pain or some other medical problem may be a factor.

carrying-dogShould I Just Carry the Dog?

When a dog is intimidated by an obstacle that prevents him from joining his family, he can get quite frustrated and this often leads to whining.

The puppy owners at this point will feel very tempted to just pick him and carry him over the stairs. As much as this seems like a great solution, in the long run, it will put a dent in teaching the puppy or dog to climb the stairs. Why?

For the simple fact that the puppy or dog will have learned that by whining, his owners will promptly come to his rescue and airlift him over the stairs. And if the owners do not tend to his requests promptly, the whining will often get louder and longer, and pet parents may then rush to his rescue just to avoid hearing the relentless concert.

The end result? The puppy or dog will give up even trying to use the stairs because he has found the solution that works best for him: “If I just whine my owners will airlift me over the scary obstacle. ”

Should I Just Pull Him Up or Down?pulling-dog

Another thing dog owners are often tempted to do is to take the short cut and try pulling the dog up or down the stairs using a leash. The concept after all is not totally unsubstantiated, considering that dogs are used to following us around when they are on leash. However, if the dog is scared of the stairs, a tug on the leash in this case will likely result in the dog putting his brakes on and categorically refusing to climb or descend.

And if you are thinking about physically pushing him, consider that this can even result in a defensive bite. Fear is fear, and by forcing an animal to confront it in a forceful manner, risks leading to more fear and even mistrust.

After all, how would you feel if you were terrified of water and somebody was trying to talk you into diving from a platform? The mere thought of this would have likely only exacerbated your fear, and on top of that, you likely won’t longer trust the person when he asks you to climb the platform.

puppy-steps-stairOne Step at a Time

To help your puppy or dog overcome his fear of stairs you’ll literally have to take it one step at a time. Desensitization is a behavior modification process where you gradually work on making your dog less sensitive to a certain stimulus or situation, by systematically taking a step-by-step approach.

On top of desensitization, you also want to add counterconditioning, a behavior modification process where you work on creating positive associations with the stimulus or situation, so to change how your dog perceives it.

The goal is basically to have the puppy or dog learn that stairs are nothing to fear, and that great things happen there. Following is a step by step guide on helping your puppy or dog conquer his fear of stairs.

Three Steps for Dogs Scared of Stairs

  1. Approach the stairways and make great things happen there. Place a treat or a favorite toy on the first step and lavishly praise any attempt to get it. When your dog gets the treat or toy make a big deal out of it, praising and playing with him.
  2. Next, place a treat on the second step and do the same. Once your dog steps up the first step to gets the treat or toy on the second step, turn and go down that step praising as you play together.
  3. Repeat the same process, going one step at a time using higher value treats the higher you go, until you reach the top of the stairway where your dog gets a jackpot of treats (several treats at once).

Some Troubleshooting Tips

Make great things happen when your dog climbs up or down.
Make great things happen when your dog climbs up or down.

Avoid speeding through the process, slow and steady wins the race! If your dog seems at any time frightened, go back to a step where he’s more comfortable and gradually build from there.

Once your dog is comfortable going up, it’s time to practice going down from the top, as to dogs this may feel like a totally different experience.

At times, some dogs benefit from watching another dog going up and down steps with confidence. Once they watch this dog go up and down with no problems, they are tempted to try for themselves.

For particularly challenging cases, where a small breed puppy is reluctant to even go up one step, you can skip the stairs for now and practice getting the puppy to climb over a big book such as a dictionary. Once he’s confident, you can move back to the stairs.

Alternatively, some dog owners have had good success by using a target stick or their hands as a way to get their dogs to move up a step. If your dog is familiar with targeting, use your hand or target stick for your dog to target with his nose and click and reward with high-value treats for every sign of progress he makes.

Keep up the training on frequent basis by making enjoyable things happen when he goes up and down the stairs, such as put his bowl of food at the top or bottom of the stairwell, give him a new toy right after he comes down the stairs or clip his leash on to go for a funtastic walk.

Dogs Scared of See-Through Stepsstep

Some dogs are not scared of the actual steps, but of seeing through them as often seen in the steps found in porches and decks. These may seem confusing to the dog and he may be hesitant placing his feet on these steps. Who can blame these dogs after all?

Placing a blanket over these steps (making sure the stairs still keep their shape so your dog knows exactly where to place his feet) may make them appear less scary to navigate. With time, the dog will become more confident walking over them and gradually the steps can be uncovered by the blanket a bit at a time until you can totally remove it.

Did you know? In some cases, dogs are not scared of the steps much, but they are more worried about the surface. If the steps are not carpeted, you may try placing down some rubber matting or traction strips so to offer better traction.

Must watch: Dogs Scared of Stairs Video Compilation

 

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