Turns out, there's more than meets the eye (or the foot) with this interesting dog behavior The post Why Do Dogs Lick Your Feet? appeared first on Reader's Digest.

This is when the mouth is relaxed and slightly open and the tongue is visible ... canine equivalent to a human smile. You can see it in virtually all breeds of dogs such as those depicted here.

Through a series of tests, the dog fence company has found that the human mouth has 1.4 times more bacteria than a dog’s kisser (er, licker) — that’s a difference of about 2,000,000 germs.

To brush your dog ... mouth. You are going to brush in circular motion, paying most attention to the canines and to the back of your dog's teeth. Don't worry so much about the inside; their tongue ...