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

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

A new study has found that chimpanzees may be far from shy bathroomgoers. A team of researchers spent more than 600 hours studying 20 captive chimpanzees to determine that chimps may experience ...

While observing a group of rhesus monkeys on a tiny Caribbean island, researchers were shocked by what they saw: widespread homosexual exploits. “I was expecting to see same-sex behavior … but the ...

A recent study out of Bangladesh confirms a concerning trend in monkey behavior, potentially leading to the extinction of two species of langurs: Phayre's langurs and capped langurs. Mongabay reported ...

The results of a UA study may be the stepping stone to furthering research regarding the interworkings of human social interaction. Researchers have discovered new cells in the amygdala, a part of the ...

Reciprocity—I scratch your back; you scratch mine—has long been thought to be one of the hallmarks of friendship and other close relationships. In the world of nonhuman primates, the back-scratching ...