No 'Hippie Ape': Bonobos Are Often Aggressive, Study Finds

&quot;male bonobos commit acts of aggression nearly three times as often as male chimpanzees do.&quot;<p>surprised by the small sample size, but then again as someone who has done primate research in the jungle... it ain&#x27;t easy.<p>&quot;9,300 hours of observations on 12 male bonobos and 14 male chimpanzees&quot;