Intro -- Foreword -- References -- Neotropical Ethnoprimatology: An Introduction -- References -- Acknowledgments -- Contents -- Contributors -- About the Editors ...

Here's something that'll make your next giggle session feel a bit weird: scientists genuinely can't figure out if your laughter evolved from joyful chimp panting or from the threatening bared-teeth ...

The Dyadic Interaction Platform at the German Primate Center, with two participants playing the Cooperation-Competition Foraging game. Photo: Thorge Beilfuß. When people reach for the same object, ...

The lives of primates, including humans, are shaped mainly by the ability to interact with others, forming friendships and alliances that provide social support in the face of challenges 1, 2. Social ...

Reciprocity—I scratch your back; you scratch mine—has long been thought to be one of the hallmarks of friendship and other close relationships. In the world of nonhuman primates, the back-scratching ...

Humans are far from the only primates engaging in same-sex sexual activity. A new study found instances in which 59 nonhuman primate species, including bonobos, chimpanzees and macaques, have taken ...

Jason Gilchrist does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...