Myth: Dogs Have Cleaner Mouths Than Humans

Pet lovers can't get enough affection from their pooches. And if licking is loving, they get a lot of loving. But is it really safe to kiss a dog, considering where they often put their mouths? "Their saliva is much cleaner and if you have a cut or anything, if they lick it -- it's healing," one woman told "20/20" while being interviewed in New York City. Proof From a Veterinarian To find out just who has a cleaner mouth, we asked veterinarian and fellow dog lover Marty Becker, author of...Full Story
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