Add Yahoo as a preferred source to see more of our stories on Google. "Hippie" bonobos are just as aggressive as "warrior" chimpanzees, according to a new study. However, the findings also reveal some ...

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 ...

WASHINGTON, March 13 (Reuters) - Bonobos for years have had the reputation of being the cool hippies of the simian world, with a "make love, not war" ethos, in contrast to their belligerent cousins, ...

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 ...

A new study of our two closest living relatives finds that, at least in zoos, bonobos may not be more peaceful than chimpanzees. Bonobos (Pan paniscus) are only found south of the Congo River in the ...

For years, anthropologists have watched wild chimpanzees "go ape" and attack each other in coordinated assaults. But until now, scientists were unsure whether interactions with humans had brought on ...

The aggressive chimp in us However, one disturbing characteristic stands out. Chimpanzees "go ape" and attack each other in coordinated assaults. Dutch primate expert Frans de Waal's 1982 book ...

It's not unusual for chimpanzees to fight. Chimpanzee society is naturally aggressive and even violent. However, visitors at the Los Angeles Zoo probably didn't expect this chimpanzee brawl to look ...

"Hippie" bonobos are just as aggressive as "warrior" chimpanzees, according to a new study. However, the findings also reveal some key details about which sex is instigating the aggression. Bonobo ...