Different Approaches to Violence: Bonobos vs. Chimpanzees

Although both bonobos and chimps both act aggressively to gain a mate, they each take a different approach to violence.Bonobos have a reputation as lovers, not fighters. But the primate species — perhaps infamous for using sex as a conflict resolution tool — exhibits more complex behavior around mating than previously thought.

Hostility between male bonobos was much more likely to be one on one, and male on male. However, unlike chimps, the bonobos didn’t coerce sex from females, nor did they kill any female bonobo or baby bonobo. But the amount of aggression surprised her. She observed 12 bonobos in the Congo’s Kokolopori Bonobo Reserve and two chimpanzee communities in Tanzania’s Gombe National Park. She tracked her subjects all day and recorded their behavior. When she tallied the totals, she initially thought she was wrong. Her data showed that bonobos engaged in 2.8 times more aggressive interactions and 3 times as many physical aggressions.

Because her observations partially contradict a prevailing hypothesis that aggression has been selected against in bonobos and humans but not chimpanzees, she redid her data tables over and over. She also re-examined every aggression incident.

Bonobos Chimpanzees Aggression Violence Mating Behavior

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