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 ...

Between 1998 and 2009, John Mitani witnessed 18 murders firsthand, and found circumstantial evidence for three more. But no police were ever called, for these killers were all chimpanzees, from the ...

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 ...

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, ...

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

At some point in your life you might have seen animals groom each other. This is something very common in chimpanzees, for example. Thanks to decades of work by primatologist Dr. Richard Wrangham and ...

Great apes share human-like social circles, but chimpanzees and bonobos differ in how selectively they maintain close social bonds. A new international study led by researchers from Utrecht University ...