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Two bonobos living in an Iowa sanctuary have made stone tools resembling those used by our ancestors. The tools hint at untapped cognitive reserves in humanity’s close relatives, who perhaps should be seen less as great apes than early humans.
Bonobos documented for first time using ancient pre-agricultural tools, breaking bones, and using spears as attack weapons
Biologists have documented groups of bonobos performing complex actions to extract food -- a characteristic that has hitherto been regarded as an exclusive evolutionary advantage of archaic pre-humans.