"They both genuinely look happy to see each other." ...

The riskiest behavior in humans peaks in adolescence. Researchers from the University of Michigan and James Madison University expected to find risky behavior to peak in adolescence in a study of ...

A new book edited by chimpanzee experts Drs. Lydia Hopper, Assistant Director of the Lester E. Fisher Center for the Study and Conservation of Apes, and Stephen Ross, Director of the Center, called ...

A blade of grass tucked behind an ear sparked a fashion craze that spread through an entire community, and the trendsetters ...

Chimpanzees are more likely to engage in play or groom each other if they see others performing these social behaviors first, researchers report. Chimpanzees are more likely to engage in play or groom ...

Jane Goodall always remembered the first time a wild chimpanzee took a banana from her outstretched hand. In that moment, she would often say, the chimp—a grizzled male she had dubbed David ...

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 ...

Learn how comparing aggression in chimpanzees and bonobos challenges the long-held belief that chimpanzees are the more violent of our closest ape relatives. For years, chimpanzees and bonobos have ...

A team of researchers from Utrecht University, Durham University, and other institutions have observed something remarkable at a chimpanzee sanctuary in Zambia. Several chimpanzees from one particular ...

Chimpanzees are one of our closest relatives and their lives are in peril because of human intrusions into their homes and lives. A new book edited by chimpanzee experts Drs. Lydia Hopper, Assistant ...