"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 females were more likely to attack males, while male chimps were more aggressive towards females. Female-on-female aggression in both species, they found, was significantly lower.
The work was in captive animals in zoos, so it may not apply to wild bonobos and chimps — but it adds to a growing body of recent research suggesting bonobos aren't as peace-loving as once described.
