Chimpanzees Show Less Theft Towards Friends: Revealing Evolutionary Bonds

A new study from UC Berkeley reveals that chimpanzees exhibit a lower tendency to steal from friends compared to non-friends. Researchers observed 26 chimpanzees over 800 hours at the Ngamba Island Chimpanzee Sanctuary in Uganda, discovering that both victims and thieves displayed differing emotional responses based on their relationships. Interestingly, while theft by friends initially sparked greater anger in victims, they quickly calmed down. The study suggests that chimpanzees have mutual expectations in their relationships, similar to human friendships. This research deepens the understanding of the emotional underpinnings of social lives, indicating foundational patterns for morality and cooperation in humans, and offers insight into improving interpersonal relationships through emphasizing collaboration and understanding.