Bonobos: Not So Peaceful? Study Rewrites Ape Behavior

For years, bonobos have been perceived as the "make love, not war" primates, unlike their more aggressive chimpanzee relatives. However, recent research analyzing aggressive behaviors in European zoos indicates this perception may be inaccurate.

The study, involving 22 bonobo and chimpanzee groups, revealed no substantial difference in the overall rate of aggressive acts between the two species. This challenges the long-held view of bonobos as inherently more peaceful.

A striking divergence was observed in the dynamics of aggression. While male chimpanzees directed aggression towards both males and females, female bonobos were found to be significantly more aggressive than female chimpanzees. Aggression in bonobo groups primarily targeted males.

Researchers noted that chimpanzees exhibit a patriarchal social structure where males dominate and often display aggression towards females for resources or mating. In contrast, bonobos are matriarchal, with gregarious females who, while competitive, do not typically display aggression towards each other. Male bonobos, though benefiting from their mothers' rank, express less aggression towards females than chimpanzees do.

Despite these findings, the study acknowledges that bonobos do maintain more peaceful relationships with neighboring groups and rarely engage in lethal intra-group violence, unlike wild chimpanzees. This suggests that while aggression is present in bonobo society, its expression and social distribution are distinct from chimpanzees.