There is a distinctive and easily recognized open-mouth expression that is the canine equivalent of a human smile, ...

But are our dogs really "smiling" the way humans do? We asked a veterinarian ... pulling one or both lips back and may show all or some teeth. The "smiling" is often accompanied by other greeting ...

But is your dog really "smiling" in the way humans understand it ... by pulling one or both lips back and may show all or some teeth. This smiling is accompanied by other greeting behavior ...

usually somewhat draped over the lower teeth. This is a sign that the dog is content and relaxed. It is the closest canine equivalent to a human smile. You can see it in virtually all breeds of ...