If you’re healthy – and your dog is, too – it’s okay to accept doggy kisses. Jan Bellow is president of the American Veterinary Dental College… and she says your dog’s mouth is teeming with bacteria, but her lick’s essentially harmless if you’re both in good health. But keep her from licking any cuts or scrapes. And if her breath could peel paint – avoid her kisses. Because that’s a sign of gum disease, and that bacteria can transfer to you.