Dolphins are extremely playful, but little is known about how they—and other marine mammals—communicate during playtime. New research publishing October 2 in the Cell Press journal iScience shows that ...

Dolphins are extremely playful, but little is known about how they -- and other marine mammals -- communicate during playtime. New research shows that bottlenose dolphins (Tursiops truncates) use the ...

For humans, flashing a smile is an easy way to avoid misunderstanding. And, according to a new study, bottlenose dolphins may use a similar tactic while playing with each other. The study, which was ...

Dolphins living in captivity often make an open-mouth facial expression while playing with each other. Zoomarine, Italy Bottlenose dolphins “smile” at each other while playing, making open-mouth ...

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 ...

A recent study out of Italy found that dolphins smile at each other while playing. The smile, which is actually more of an open-mouthed expression, was observed almost exclusively when dolphins were ...

Laughter’s evolutionary story may be written on chimpanzees’ faces. Chimps at play make open-mouth facial expressions while either laughing out loud or staying silent, say psychologist Marina ...