Two wombs, a forked penis, and giving birth through the nose. These are just a few of the bizarre stories circulating about ...

Close up image of a greenland shark taken at the floe edge of the Admiralty Inlet, Nunavut. Credits: Hemming1952. “You see it ...

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

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

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