As fewer people choose to pair up, let alone marry, it could be that our species’ mating patterns are moving closer to the natural order, says freelance journalist Elle Hunt ...

A new study suggests humans belong in an elite “league of monogamy,” ranking closer to beavers and meerkats than to ...

Born on the same day, Bill and Ben both grew up to have high status. But in every other way they were polar opposites.

Talk about a jungle joyride -- two gorillas went completely bananas for each other, tossing modesty into the bushes, and getting busy in broad daylight... giving stunned onlookers a surprise mating ...

Experts at Imperial College London suggest homosexuality might help forge strong bonds that allow groups to stay together to survive harsh conditions.

A new study comparing 59 species of primates linked same-sex sexual behavior to scarce resources and more predators in ...

Why do humans have larger penises than other primates? New research tests attraction, rivalry, and sexual selection for ...

Born on the same day, Bill and Ben both grew up to have high status. But in every other way they were polar opposites.Author ...

“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ...

Nate Heygi: This is Karyn Anderson. She’s a primate behavioral ecologist at the University of Toronto. She studies same-sex relationships in the animal kingdom. And she says, first off, there are ...

Why is same-sex behaviour so common in animals? A new study suggests it's a crucial survival strategy for building social ...