Add Yahoo as a preferred source to see more of our stories on Google. Bonobos live in matriarchal societies where one would expect more aggression among females, but researchers observed more ...

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 chimpanzees. But is this ...

Add Yahoo as a preferred source to see more of our stories on Google. Bonobos (Pan Paniscus) on a tree branch. The Swearing and Aggressive Bonobo ( Pan paniscus). Democratic Republic of Congo. Africa© ...

Chimpanzees have a reputation for being aggressive, while bonobos are often seen as their peaceful counterparts. This contrast has frequently been used to explain different sides of human nature.

Why the Latest Science Leads Us to a New Theory of Human Nature, by Jonathan Leaf (Bombardier, 320 pp., $21) Ever since Darwin, biologists have believed that much could be learned about human nature ...

Bonobos (Pan Paniscus) on a tree branch. The Swearing and Aggressive Bonobo ( Pan paniscus). Democratic Republic of Congo. Africa© Sergey Uryadnikov/Shutterstock.com For decades, scientists believed ...

Historically considered a more peaceful species than their chimpanzee cousins, bonobos are actually just as aggressive -- but target their ire most often at males, according to a study published ...