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