New study finds that large group size and mating systems where males have multiple mates drove evolution of deeper male voices in primates, including humans UNIVERSITY PARK, Pa. — Deeper male voices ...

Charlie Nunn and colleagues predicted that primates with promiscuous mating habits would be more exposed to STDs and would hence show adaptations to combat higher infection risks. Sure enough, ...

Northern muriquis, which live in the Atlantic forest of Brazil, are one of the most endangered species of monkey in the world. To better understand what goes on in the mating lives of muriquis, ...

It turns out that one of humanity’s oldest professions may be even older than we thought: In a recent study of macaque monkeys in Indonesia, researchers found that male primates “paid” for sexual ...

Why be social? And, why not be? What are the costs and benefits of sociality, and what types of sociality characterize nonhuman primates? Given all of these potential costs of group living, why do so ...

Conventional biological wisdom says that when it comes to mating, it's better for females to attract one steady partner and for males to attract as many females as they can. Commentator and ...

Oxford researchers map the evolution of the kiss and conclude that mouth-to-mouth contact likely arose in a common primate ancestor 16.9-21.5 million years ago.

ATHENS, Ohio (May 24, 2007) -- You might call it a tale of "monkey see, monkey do." Researchers at Ohio University have found that after primates evolved the ability to see red, they began to develop ...