BARKBUSTERS!
Our “BarkBusters” series tackles popular myths about our pets and puts them to the test. With science-based research, expert insights, and a fun approach, we uncover the truth.
Will this myth be BarkBusted, BarkBacked, or leave us Bark Baffled?
Let’s find out!
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“Dog’s Mouths Are Cleaner Than Human Mouths”
I’m sure you have heard this one before. Do dogs really have cleaner mouths, or is it just a myth? Find out the truth before your next puppy smooch sesh.
Historical Beliefs About Dog Licking
Believe it or not, the belief that letting a dog lick a wound can aid healing dates back centuries. Many ancient civilizations, including the Egyptians, Mesopotamians, and Greeks, believed dogs could help heal wounds by licking them. In recent times, some people have claimed that dog licking can help clean wounds and that their saliva is sterile.
FURRY FACT!
The Sanctuary of Asclepius existed in Epidaurus, Greece over 2,000 years ago, and was dedicated to Asklepius, the god of healing. Asklepios was often depicted with a dog as his companion, and individuals would receive licks from sacred dogs kept at the sanctuary.
Hmm… Could there be some truth to this after all? Let’s do some more digging!
Dog Mouths Compared to Humans
Both dogs and humans have more than 600 distinct types of microorganisms found in their mouths and play a role in oral health and overall well-being. However, only about 16% of the bacteria types are found in both dog and human mouths.
FURRY FACT!
The oral microbiome is the term scientists use for all the microorganisms living in the mouth and their combined genetic material.
So, while humans and dogs have about the same number of unique bacteria in their mouths, the composition of those bacteria is very different.
Can Dog Saliva Make You Sick?
While some bacteria can be passed between dogs and humans, the transmission is typically limited. The bacteria that do transfer often fail to thrive because dog saliva is less acidic than human saliva. As a result, dog bacteria can’t compete with human bacteria and are usually washed away by toothbrushing.
While it is true that certain proteins in dog saliva contain some antibacterial properties and can defend against infection, it doesn’t mean dog saliva is hygienic. Dogs use their mouths for almost everything, so they can carry germs or parasites from things their mouth has touched (i.e., eating out of the garbage, drinking out of the toilet, licking the floor, eating their own poop, etc.) and pass them on to you. They are animals, after all.
Dog Dental Health
Many dogs suffer from dental issues like plaque buildup, gum disease, and tartar. These conditions not only affect oral health but also harbor bacteria that can lead to further health problems and increase the risk of passing disease to humans.
FURRY FACT!
Nearly 90% of dogs over age 3 have some form of dental disease. It often goes unnoticed because the problem is lurking under the gums, where it can’t be easily seen.
While dogs and humans typically don’t pass diseases to each other through saliva, it doesn’t mean a dog’s mouth is inherently cleaner than ours. Studies have shown that regular brushing, dental chews, and water additives can reduce harmful bacteria in your dog’s mouth. Regular dental care—like brushing and professional cleanings—helps control bacteria and not only protects your dog’s health but also reduces the chance of your dog getting you sick.
So, while you should definitely avoid letting your dog lick your wounds (hopefully, that’s not something you were considering!), the occasional puppy lick is a small risk worth taking for the joy it brings. Just skip the French (Bulldog) kisses!
FINAL VERDICT:
BARKBUSTED!
READ ABOUT: WHY IT’S IMPORTANT TO MAINTAIN YOUR DOG’S NAILS
