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Dr. Coates is a veterinarian based in the other “Sunshine State” – that's Colorado to the rest of you – where she lives and plays with a varied range of animals. She shares her professional and personal experiences, Monday through Friday, here on petMD's blog, the Fully Vetted. Log in for your daily dose of her insight and wisdom.

 

Last week's oddball pet questions answered ... finally!

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March 25, 2011 / (28) comments


By popular demand, I will finally answer my sister's oddball veterinary questions from last week's post on the subject of "strange things pet owners want to know but are scared to ask their vet." So many of you commented or e-mailed me with your pressing need to KNOW, that I cannot possibly refuse. Even my mother wants an answer to the saliva viscosity thing.

 

So here goes:

1. What makes dog saliva so slippery? It’s amazing when Madison drools while waiting for food. The intensely thick and slick puddle can take a person down — no banana peel needed.

I think I've also overheard that it's the world's best natural lubricant. Truly, however, I have no answer, other than to note that cat saliva is also incredibly viscous. Maybe someone else out there knows...?

2. Why does Madison like to stare into my eyes and hold eye contact (not when he wants food or something)? I understand why Morgan (the wild one) doesn't like to make eye contact, but what does Maddie's stare mean?

I will have to ask a behaviorist (or twelve) to get a better handle on this one but here's what I suspect: Dog domestication has evolved patchily over the last eon or so. Greater domestication is accompanied by behavioral traits that include the very human (and much less dog-like) eye contact thing.

Extended eye contact among dogs is verboten unless you want to spar, but domesticated dogs have come to associate eye contact with humans as a way to get things from us. Wilder dogs (like Morgan) would never deign to beg in this way but happy dogs like Maddie fall all over themselves to get your attenshun* any way they can.

3. Why do dogs' pads sometimes smell like evergreen meets rosin? And other times like corn chips?

Knowing your dogs I'd say it depends on the season, the hiking terrain and moisture levels. Got moist feet? Then maybe you've got yeast growing there; that can kind of smell like corn chips.

Hiking among the evergreens? Voilà.

4. What is the purpose of a dewclaw?

Vestigial; which means it no longer has a purpose. It is in the process of being evolutionarily rejected, which is why so many purebred and sporting dog owners want them lopped off.

5. Why does Morgan poop every morning like clockwork and Madison is not as regular?

Why does my receptionist constantly complain of constipation in spite of an Activia habit, and my acupuncturist not-so-subtly tut-tut that my elimination habits are more frequent than most?

Get over it! As long as everything that goes in comes out and no impact on health results … who the frick cares?

6. Why do they say dogs can't go into restaurants for health reasons — what health reasons?

They lie. Or rather … they are ignorant. They excuse the feverish sneezes of a human child in the table at the front of the restaurant as "cute" while a dog’s under-the-table snores are regarded as "the devil's music." (I’m making stuff up now.)

Honestly, I think most restaurants are more worried about dog bites and liability insurance than they are about any health risks. That or they truly are as stupid as all get-out.

7. Why do some dogs have hair in their ears (Morgan) and some don't (Madison)?

Arctic vs. non-Arctic breeds, mostly. Dogs who must survive in cold climes are more likely to have hairy ears. That's an easy one. Next...?

8. Did yoga develop from watching dogs? They totally do a downward dog thing.

Yes. Yogis obviously engage in bio-thievery. They totally stole the pose from dogs.

9. Why does a dog have a nose slit right in the middle of its nose as opposed to two holes like us?

Not sure I get your meaning. Especially since YOU have a perfect nose with a teensy divot in the middle just like your dogs. I'm not jealous or anything … I'm just saying.

10. If a dog's tail hangs over its anus why doesn't it ever get really dirty?

I'm not sure which way to go with this one but I think I'll err on the side of biology:

Dogs have a lot more natural oils on their fur than we do on our human hairs. These oils repel the mucosal exterior of most dog stool. But that's not universally true. By virtue of their hairy genetics, some dogs have finer, longer, less oily hair (think Maltese). That's what a groomer's "sanitary clip" was invented for: clean tails.

*

How did I do?

 

 

Dr. Patty Khuly

 

 

*Intenshunal misspell

 

Pic of the day: "Do you want a treat?" by Matthew Field

 

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COMMENTS (28)
1
Dirty Tails
by TheOldBroad on 03/25/2011 07:01am

"sanitary clip"

Also known as:

Potty Strip
Poopie Path
Hygenic Strip

Some cats need 'em, too!

2
by wikith on 03/25/2011 08:22am

I think the dogs in restaurants thing is more of a stink/training thing. If you start letting some dogs in, it because difficult to keep others out. And while that well-groomed, sweet-smelling, down-stay dog is fine, how many client do you have with dogs that haven't seen the business end of a bath in months, are questionably housebroken, and liable to help themselves to the goods... potentially from someone other than the owners? Fleas, potty messes, unbathed dogs, shedding, paws on the table... These may not be true health issues, but they are enough to gross people out big time. I'm down with letting well-behaved dogs on the patios of restaurants, but I totally support keeping them out of the dining room. Granted, I feel the same about the loud, snotty, sneezing, whining, poorly-trained children as I do about their canine counterparts...

3
by Sian on 03/25/2011 09:05am

Some dogs do shed a lot of hair though, other restaurant goers would not be impressed with hair in their food (including me tbh). And those dogs that perpetually beg food would be annoying in a restaurant, not to mention other behaviour problems. I'm happy to keep restaurants a dog-free zone (although I wouldn't mind them in more casual situations, especially on patios etc) but I'd also love to get away with them being a child-free zone too (or at least the under-5s).

4
Answer to first question
by JoyceAnthony on 03/25/2011 09:08am

That gooey, sticky substance coming from a dog's (or cat's) mouth is not slobber, drool or any such substance--it is liquified love (so my son told me when he was 9). Because our furkids love so strongly, it has to be thick because the love is so abundant--and it has to be sticky so it stays with us and let's us know how much they love us :-)

Okay, another mystery solved!

5
Love this Picture
by kay morris on 03/25/2011 09:09am

How, could any-one say no ? to this Pet-Kid...LOL..Thank-you, Doctor Khuly, for your answers, to the odd-ball question. But still would like to know, Why our Maxwell Drools at his meal time ? Hope someone knows.

6
Hairy ears
by catdoc1 on 03/25/2011 09:21am

Then why do poodles and schnauzers have hairy ears?

by NvonS on 03/26/2011 11:22am

My Havanese has to have the hair pulled from her ears. I do it bi weekly and the groomer does it every 6 weeks. Not a cold weather dog by any means :-)

7
by babysweet on 03/25/2011 09:36am

Srsly...

1. Saliva is "slippery" because of glycoproteins created by the mucous cells of the salivary glands.

3. Yeast, shmeast. Healthy dog feet smell like corn chips, natch.

4. Dewclaws are arguably not "in the process of being evolutionarily rejected" (front dewclaws, anyways). It's surmised that the dewclaw is what is left of a larger fifth digit that has been slowly devolving - but says who? Perhaps the digit evolved into the dewclaw because the dewclaw provides and evolutionary advantage? Just because something gets smaller doesn't mean it's on the way out. After all, modern humans have smaller brains than neanderthals, but this doesn't mean that our brains are devolving any more than it suggests we should just hurry up and remove them at birth.

http://netpet.batw.net/articles/dewclaws.html

http://www.helium.com/items/1704020-mammalsdogsclawsnailscaremedicalsurgicaldewvestigialitycharacterwildlife

Do loose or poorly structured dewclaws present a danger to active or sporting dogs? Potentially. But this is about artificial selection, not evolution. Wolves have lost their rear toes/dewclaws, and yet they retain their front ones. If the dewclaw was not evolutionarily advantageous, or worse, posed a potential danger to the wolf, one would assume that the wolf would have long ago shed the digit.

9. http://books.google.ca/books?id=pqJRCIXAFSgC&pg=PA70&dq=why+don%27t+dogs+have+nostrils&hl=en&ei=85eMTfK3E8u2twe7pfi3DQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDIQ6AEwAA#v=onepage&q=why%20don%27t%20dogs%20have%20nostrils&f=false

Dog's noses are shaped that way for a very important reason - click the above link for a brief description.

by KLD on 03/25/2011 05:35pm

See #16 below for a reply to your comment.

8
frito feet
by geckospot on 03/25/2011 09:41am

The frito or popcorn smell from sleepy dog's feet is wonderful, almost as good as puppy breath. It can't just be yeast.

9
#7
by WOWHAVS on 03/25/2011 10:12am

I raise Havanese, the national dog of Cuba (a HOT climate), and Havanese have hair in their ears. The darker the coat color, the more hair...... hmmmmmm..... ?????? If not plucked out regularly, horribly smelly ear infections must be tended to.

10
Dew Claw Correction
by TheDogTrainer on 03/25/2011 10:31am

In some breeds, the rear dew claws are still used. And, are kept on----and are "double dew claws".

Most of the breeds that keep them are French Herding/Guardian breeds. Beauceron,Briard, Pyrenes....a few...

The dogs use them in the rocky terrain of France, to grasp rocks with for climbing the hills.

Also, Dew Claws are left on European bred Rotties. I have watched my Rotties, grasp things, such as bones with their dew claws on the front, for better grip when chewing!

11
popcorn paw
by spotcat on 03/25/2011 12:04pm

Call me crazy, but I am a little bit in love with my Labrador's big paws. They always smell to me like popcorn. Not that I put my nose to them so often... :-)

by spotcat on 03/25/2011 12:09pm

p.s. Wish my feet smelled so good after a run through the woods! Not so much... :-)

12
by susanbt on 03/25/2011 12:26pm

Dogs usually lift their tails just enough to let the poop clear. How do I know this? Because I had a bulldog who took a year to figure it out. For more than a year, we had to grab her on the way into the house and clean her butt, because there would be a wad of dog poop stuck under her tail. Then, one day, I guess a light bulb went on over her head and she figured out how to "clear the path" and we never had to wipe her butt again except if she had runny poo that dribbled down.

My two dogs now both lift their tails and we have no problems.

13
eye contact
by susanbt on 03/25/2011 12:32pm

Alexandra Horowitz in "Inside of a Dog" agrees with your analysis about our dogs staring into your eyes. They've figured out it is a way to get information and goodies from us. But I would still think twice about staring into a strange dog's eyes.

14
Question 1 on saliva
by aciereszko on 03/25/2011 01:39pm

The enzyme amylase is found in saliva, it starts the breakdown of carbohydrates in the mouth. This enzyme is a protein molecule, a very large molecule, so when it dissolves in water it makes the solution more viscous than plain water. Sort of like egg whites BEFORE cooking, they are full of protein molecules dissolved in water.

by rockjdog on 03/25/2011 02:32pm

yup, Pavlov realized this hence the need to increase saliva production to test digestion.

My dog is a real slobberer ( think hooch from the movie).
If he drinks from his bowl what is left is a viscous mess of saliva resembling the texture off egg whites.

by CathyA on 03/27/2011 07:02am

Dogs don't have any to very little amylase in their saliva. If your dog eats kibble, saliva is serous (watery), if they eat meat, it's got more mucus.

Salivary glands and saliva:
http://www.vivo.colostate.edu/hbooks/pathphys/digestion/pregastric/salivary.html

15
Dew Ckaws
by Hawthorne on 03/25/2011 03:40pm

Well, you blew it on dew claws. Sighthounds (and probably others) use them on tight turns.

On some breeds, I'd call them 'vestigial', they are not even connected.

16
by KLD on 03/25/2011 05:10pm

Yes yeast! Every spring my dog has infected paws. Sometimes yeast, sometimes (like now) staph, sometimes both.

He also uses his dew claws for extra purchase on steep, slippery slopes and to "grasp" his Kong.

by KLD on 03/25/2011 05:34pm

This was supposed to be a reply to #7, babysweet

by babysweet on 03/25/2011 06:56pm

Oh for crying out loud. I wasn't suggesting that your dog couldn't possibly have yeast in his feet.

I was STATING that dogs feet naturally smell like corn chips (or doritos, or popcorn depending on who you ask) and that is their natural smell. (although why, I don't know. I suppose that's like asking why corn chips smell like corn chips?)

IF you smell your dog's feet and they smell different than normal, by all means see your veterinarian.

If, however, you're sitting at home reading this and have the urge to smell your dog's feet - well, don't go rushing to the vet just because they smell like every other dog's feet. Just sayin'.

by Hawthorne on 03/27/2011 03:04pm

I don't know about the staph, but too much carb in a diet might well result in yeast infections. I'd think it more likely to show up in ears, but who knows?

I'd look at the % of corn in the ration I was feeding, and try to find something with a much lower protein-from-grain content. That's any grain, really.

Good luck with it! That's got to be uncomfortable for the dog.

17
Frito feet
by CathyA on 03/27/2011 08:00am

Personally I've always wondered if they smell like corn, well, because they're eating corn!

by Hawthorne on 03/27/2011 03:00pm

Sure sounds reasonable to me!

18
Frito Feet
by Gretchiesmom on 03/28/2011 01:53am

I'd always heard that if a dog's feet smelled like Fritos, it meant that he/she was allergic to the corn in his/her dog food. People claim that when they switched to a non-corn containing dog good, the Frito odor went away. Go figure...

19
Saliva
by JeanetteG on 03/28/2011 02:30pm

Glycoproteins. This is why it is important not to sleep during cell bio in case you have to explain things like this. It's also the same reason fish are so slippery.

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About fully vetted

Patty Khuly, VMD, MBA

Photo of Dr Khuly

Dr. Khuly is a former petMD blogger and small animal veterinarian in Miami, Florida, where she practices medicine at Sunset Animal Clinic and serves on the board of the South Florida Veterinary Medical Association. She is a graduate of Wellesley College, the University of Pennsylvania School of Veterinary Medicine, and The Wharton School of Business.

As a significant sideline, she writes...a lot. She authors pet health columns for USA Today, The Miami Herald and Vetstreet. She also writes a popular monthly column for Veterinary Practice News and serves as regular contributor to Veterinary Economics, The Bark, and the Veterinary News Network.

Dr. Khuly lives in South Miami with her brood of hens, goats, dogs, cats...and humans.

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