To human ears, the laughs of individual hyenas in a pack all sound the same: high-pitched and staccato, eerie and maniacal. But every hyena makes a different call that encodes information about its ...

Sure, hyenas laugh. But did you know they groan, giggle and whoop too? Researchers at UC Berkeley have been listening to the calls of a colony of hyenas in the Berkeley hills and just released a paper ...

Laughter is often called the most human sound. It carries joy, relief, connection, and sometimes even healing. For centuries, we believed that laughter belonged only to us, a special emotional ...