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Bonobos and chimpanzees diverged from each other around 2 million years ago and differ in morphology, behaviour and perhaps even emotions and cognition in important ways.
The Bonobo – Bonobos are female dominant, with females forming tight bonds against males through same-sex socio-sexual contact that is thought to limit aggression. In the wild, they have not been seen to cooperatively hunt, use tools, or exhibit lethal aggression.
The Chimpanzee – Chimpanzees are male dominant, with intense aggression between different groups that can be lethal. Chimpanzees use tools, cooperatively hunt monkeys, and will even eat the infants of other chimpanzee groups.