Animals mating with the same sex is a common trait, having evolved so repeatedly in mammals that it is now thought to be helpful for social bonding and reducing conflict. Over 1,500 species of animal ...

A study by Spanish researchers suggests same-sex sexual behavior among mammals − especially primates − is not only common and adaptive but supports social relationships and reduces conflict. Their ...

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 ...

Homosexual behavior is much more common across the animal kingdom than we first thought, new research has found. Scientists found that 78 percent of animal behavior experts had seen some degree of ...

Humans are far from the only primates engaging in same-sex sexual activity. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. A new study found ...