The cutest of all? When we offer up a big, goofy grin, she matches us with a smile of her own. But are our dogs really "smiling" the way humans do? We asked a veterinarian about what our canine ...

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

However, a ‘smile’ from a dog doesn’t always ... For example, DeWillems’ own dog, Lola, does a big mouth pant with her tongue hanging out after a playing session, while her ears are ...