ROSIE McCALL: ‘We know that wild chimps (and bearded capuchins) have learned to use tools to unearth tasty treats like plant roots and tubers. So, to try to understand how these behaviors developed, researchers performed two experiments examining tool use in captive chimps. Not one of the 10 chimps involved in the study had been … Continue reading Chimps Learn A Digging Behavior Once Thought Unique To Humans And Other Hominins