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: ...

(PhysOrg.com) -- Female bonobos are noisy bi-sexual love-makers that call most when mating with higher ranking partners, according to new research. The new study by researchers at the University of St ...

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 ...

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.

(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 ...

WHEN observing cultures of Panagrolaimus rigidus to examine their life-history, copulation seemed to depend simply on chance encounters between males and females. However, as males often touched males ...

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 ...