A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in socially complex species. The findings show diverse sexual behaviors are common — ...

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 ...

Observations of a wild colony of macaques over three years show same-sex sexual behavior among males is widespread and may be beneficial. The results, published today in Nature Ecology and Evolution, ...

Humans perceive emotional expressions displayed by non-human primates and spontaneously mimic these expressions, according to ...

"Based on the results of a symposium on primate social behavior sponsored by the Wenner-Gren Foundation for Anthropological Research and held at ... Burg Wartenstein, Austria" siris_sil_9816 ...

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 ...

Researchers at the University of Oxford, Oxford, England, traced the evolutionary origins of kissing and described their work on Evolution and Human Behavior as the first attempt to reconstruct its ...

Crying is one of the most recognizable human emotional signals. Tears appear when people experience grief, relief, joy, or deep stress. Because this response is so familiar, observers often assume ...