Add Yahoo as a preferred source to see more of our stories on Google. Dolphins have an irresistible charm for people. They are extremely playful at all ages and often play alone, surfing the waves, ...

Dolphins are known for what appear to be big, contagious smiles. But do they actually, well, smile? The answer, according to a new study of dolphin play, is a resounding “maybe.” Dolphins use their ...

Facial expressions are important for managing social interactions across a variety of species. In many animals including lemurs, dogs, gorillas, and sea lions, an open mouth smile-like display ...