A new study posits that same-sex sexual behavior developed to help primates in complex social groups ease tension, reduce ...

Science shows birth order doesn’t shape personality. Our traits come from genes, peers, and experience, not our place in the ...

More than 59 different primate species have been observed participating in some kind of same-sex behaviors, making it ...

Biologists tend to look at the animal kingdom and try to categorize things in an organized fashion. But nature has a way of ...

Bonds between same-sex individuals help apes and monkeys to manage conflict and strengthen alliances, especially in dry ...

Homosexual behavior in primates has a deep evolutionary basis and is more likely to occur in species that live in harsh ...

A new study by researchers at Imperial College London and published on Monday in Nature Ecology & Evolution could help shed ...

Sexual behaviour among same-sex pairs is common in apes and monkeys, and a wide-ranging analysis suggests it does boost survival ...

Deep beneath the French countryside, in La Roche-Cotard cave, finger-drawn lines and dots lay hidden under 30 feet of ...

Ai, a "genius" chimpanzee who could recognise more than 100 Chinese characters and the English alphabet, has died aged 49, ...

OSAKA – Ai, known as a genius chimpanzee for her pivotal role in research exploring language evolution, died Friday at the age of 49, the Center for the Evolutionary Origins of Human Behavior, Kyoto ...