Dolphins are very social animals that scientists have observed “smiling” while playing with one another. But a solitary bottlenose dolphin, known by the name Delle, has been observed near the ...

"Due to the shape of dolphins' mouths, we often think of them as smiling. "Risso's live in large family groups and in Monterey Bay, Risso's dolphins feed largely on small market squid that mate in ...

The dolphin smile is a fixed feature of their anatomy—dolphins smile even when dead. Dolphins and other cetaceans suffer stress and anxiety when kept in captivity, particularly when there is no ...