This isn't the first time we've highlighted a report of a bat species that engages in oral sex. However, this time it's the females that get the extra attention. First fellatio, and now cunnilingus: ...

(Phys.org)—A small team of researchers from Dalhousie University, the University of Massachusetts and Tufts University has learned more about the ways that cetaceans copulate by using parts from dead ...

(PhysOrg.com) -- The duration of sexual intercourse differs wildly across the animal kingdom. Now researchers seeking to understand the evolutionary significance of lengthy copulation duration have ...

Pseudo-copulation -- an interaction that mimics sexual copulation -- is a behavior known in mammalian communities that reduces aggression and signifies social dominance, particularly among males.

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...

Female chimps are more concerned with having sex with many different males than finding the strongest mate, according to researchers. The new study suggests that female chimps keep quiet during sex so ...

Eavesdropping male Barbary macaques can tell by a female's cry whether copulation with another male has been an orgasmic experience. The female macaques emit ear-piercing calls when mating that vary ...