AMES, Iowa – Iowa State University Anthropology Professor Jill Pruetz long suspected that man-made changes influenced the aggressive behavior researchers have observed among chimpanzees. However, her ...

The Ngogo chimpanzees of Uganda's Kibale National Park have long been known for violent clashes with neighboring groups, often resulting in deaths—a phenomenon sometimes described as "chimpanzee ...

Nothing brings a group of primates together, humans included, quite like a threat from outside. Bonobos are unique among ...

CHICAGO (WLS) -- Animal researchers have known for some time that chimpanzees are very much like us. But a new study shows that just as we go to war sometimes to protect our territory and way of life, ...

In humans, sexual behavior has a bigger purpose than just reproduction. It plays a role in social functions, from strengthening bonds to resolving conflicts. A new study has extended sexuality's ...

Despite being one of the most cooperative species on the planet, humans routinely fail to manage shared resources sustainably ...