Add Yahoo as a preferred source to see more of our stories on Google. Japanese macaques at Joshin-etsu National Park in Japan. (Peter Adams / Getty Images file) (Peter Adams) Humans are far from the ...

In mammals, social behavior and social status can substantially influence the survival, reproductive performance, and health of individuals. However, it is not yet fully understood how the translation ...

For decades, scientists believed that bonobos, one of our closest living relatives, were among the most peaceful primates. Nature seemed to reassure us that, within the world of primates, aggressive ...

Cooperative behaviour and prosociality in nonhuman primates constitute a vital area of research that illuminates the evolutionary origins of complex sociality. Studies indicate that primates employ a ...

Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

Most of the contributions included were drawn from a symposium presented at the 1977 meeting of the Western Psychological Association in Seattle, Washington.

New study finds that large group size and mating systems where males have multiple mates drove evolution of deeper male voices in primates, including humans UNIVERSITY PARK, Pa. — Deeper male voices ...

Humans perceive emotional expressions displayed by non-human primates and spontaneously mimic these expressions, according to a study published in the open-access journal PLOS One by Ursula Hess from ...

Humans are far from the only primates engaging in same-sex sexual activity. A new study found instances in which 59 nonhuman primate species, including bonobos, chimpanzees and macaques, have taken ...