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Humans and great apes have been giggling in similar ways since branching off the evolutionary tree, a new study suggests.

The study compared laughter from four orangutans, two gorillas, three bonobos, four chimpanzees, and four human children, ...

By Will Dunham WASHINGTON, June 29 (Reuters) - There are many kinds of laughter. People may guffaw at a joke. They may giggle ...

Animals that laugh prove that joy is not limited to humans. While laughter is often seen as a uniquely human expression, science shows that several animals produce laughter-like sounds during play, ...

Sound doesn’t leave a fossil record, making it difficult to trace the origins of song, speech and language – but researchers have found a way.

Among humans, laughter can signify a lot of different things, from intimacy to discomfort. Among animals, however, laughter usually communicates something along the lines of “this is playtime—I’m not ...