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

Humans are the only primates that run nearly naked under the sun. Here’s how this biological tradeoff reshaped how our ...

A growing body of research suggests same-sex behavior in nonhuman primates is important to social connections.

Bonobo evolution reveals bonding and group cohesion in response to threats, favoring paths to finding peace instead of ...

Bonobo chimpanzees are unique among primates because they do not kill other bonobos. … They still showed increased alertness ...

Same-sex sexual behaviour has been recorded in around 1,500 species, from insects and starfish to birds and mammals. Yet sex ...

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

Past theories have suggested that animals exhibit SSB to increase group cohesion, to signal dominance among a larger group, ...

Nonhuman primates like bonobos and chimpanzees might engage in same-sex sexual activities to strengthen bonds, particularly ...