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 ...

She added, "I cannot smile anymore," and demonstrated on camera saying, "Look, this is as big as I can smile." Trainor’s brother, Ryan, admitted he teased her a bit about her inability to smile ...

If humanoid robots make you a bit queasy — would it help if they had fleshy faces that can smile at you? The uncanny feat is the result of new technology using engineered living skin tissue and ...