Why do puppies have “puppy breath”? - Stephenie
A: I’m assuming, Stephenie, that you mean the good stuff - a clean, sweet smell. There are passionate devotees of this odor who practically snort a little pooch’s muzzle every chance they get. (Which is certainly better than smelling what comes out the other end.)
Vet, consultant and author Thomas Catanzaro has been famously quoted as saying, “Of all the things I miss from veterinary practice, puppy breath is one of the most fond memories.”
This smell is perfectly healthy and - unfortunately - a little like new-car smell in that it disappears in a few months.
They grow up so fast.
Catanzaro and other vets guess that puppy breath is a result of their healthy, mild diet of mother’s milk and puppy food, and the enzymes that break these things down.
And just as puppies don’t eat big-dog stanky food, they don’t have big-dog stanky mouth bacteria or the advanced plaque problems older dogs develop. So their mouths are clean.
Some vets learn in school that puppy breath is caused by a still-developing esophagus leaking gas from the stomach.