Setting the Record Straight on Who's Mouth is Cleaner: Yours or Your Dog's

Whether you’re a long-time dog owner or a newbie to the world of pet ownership, you’ve most likely heard the oft-repeated wisdom that your canine companion has a much cleaner mouth than any human possibly could. If you’ve ever spent any time observing your dog’s grooming habits or propensity to use their jaws as a tool to pick up, well, just about anything, you may have questioned the accuracy of the whole statement on doggie hygiene.

Fido did seem rather pleased with himself when he brought you that dead squirrel on your weekly walk. Is it possible that your dog’s mouth has some natural antimicrobial, cleansing or other properties that fight off germs and make it “cleaner” than your own brushed and toothpasted orifice? Read on to find out the truth behind this “common knowledge”.

Is Your Dog’s Mouth Really All That Cleaner?

When it comes to whether your dog’s mouth is really cleaner than the average human’s, the answer is a resounding no. As you would guess, your dog comes into contact with a variety of bacteria and foreign bodies in their daily hunt for sniffs, food, treats and toys. In addition, both dogs and humans have a natural set of bacteria or flora, that live in their mouths in harmony with their body’s immune, digestive and other systems. In general, your dog has about the same number of bacteria as you would. Your dog wins in the unhygienic category, however, when you consider the normal “doggy” behaviors they seem to be fond of engaging in such as raiding the litter box, digging into the trash and grooming certain, uh, personal areas on their body.

Given the science to refute the claim, you may wonder how the myth started getting spread around in the first place. While your dog’s mouth may not be cleaner than yours, it turns out that you have a lower potential of catching germs and diseases from a normal, well-groomed, dog than a similar human counterpart. This is owed to the fact that most of the germs and bacteria in a dog’s mouth aren’t zoonotic, meaning they can’t cross species. If you kiss a friend, partner, or family member that has the flu, for example, you are at a high risk of catching their cold and becoming sick yourself. Most of the bacteria that reside in your dog’s mouth aren’t compatible with human bodies, making people unlikely to get sick from these germs.

Before you get a big ole slobbery kiss from your pooch, however, you should take note of a few important facts. Doggy dental hygiene is just as important as it is in humans. Pet owners should take measures to ensure their dog has good oral health. This includes feeding raw meaty bones that help clean teeth of tartar and buildup and having Fido’s teeth brushed on a regular basis with a dog approved toothpaste. Dogs also shouldn’t be allowed to lick their human owner’s open wounds, as some bacteria is still present and able to infect these cuts, causing potential health risks.

The Bottom Line on Dogs and Mouth Hygiene

Although the saying that your dog’s mouth is cleaner than your own may be a myth, it turns out that it’s partly just a matter of perspective. Sure, you may not be able to pick up colds, diseases, and illnesses from kissing your pooch the way you can with another person, but that doesn’t mean their oral cavities have fewer bacteria than yours. In addition, dogs are still prone to tooth decay and owners should take care to practice good dental hygiene with their pet. Knowing the details of your dog’s mouth cleanliness is an important key to helping ensure your dog’s health and happiness for years down the road.

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