Need a pick-me-up today? Watch a video of a smiling dog – it should do the trick. But is your dog really "smiling" in the way humans understand it? And if so, what is it trying to communicate?

A woman who owned a Schipperke (a small black and usually tailless dog) asked me, "My dog doesn't have a tail to wag to tell me whether he is happy or not. I have looked at his face a lot and he doesn ...

Need a pick-me-up today? Watch a video of a smiling dog – it should do the trick. You could go for the dog smiling as his owner takes a selfie or the one where the owner is training their puppy to ...