#bonobos #chimpanzees #gender #aggression
"Despite their contrasting reputations, bonobos and chimpanzees show similar levels of aggression in zoos.
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. However, a new study by Utrecht University behavioural biologists Emile Bryon, Edwin van Leeuwen, Tom Roth and international colleagues shows that, in zoos, chimpanzees are not more aggressive than bonobos. The study was published today in the scientific journal *Science Advances*.
The team of researchers compared the occurrence of aggressive behaviours in 22 zoo-housed groups of chimpanzees and bonobos. While no difference was found in overall aggression, the team did find that the two sister species differ in how the aggression is distributed. Bryon: 'In chimpanzees, aggression mainly comes from males and is directed at everyone. In bonobos, aggression comes from everyone but is mostly directed at males.'”

