Bonobos, like humans, cooperate with unrelated members of other groups

Humans regularly cooperate and share resources with other, unrelated humans in different social groups, often without any immediate, reciprocated benefits. The phenomenon has been considered unique to our species. But some bonobos appear to share this social trait, a study finds.

This type of cooperation is thought to underpin human civilization. So bonobos’ ability to bond and cooperate with groups of nonrelatives across group boundaries, even when there’s no immediate payoff, may provide some insight into the kinds of evolutionary conditions that led to the development of humankind’s large-scale societies, researchers report November 16 in Science.  

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