Chimps plunder less pineapple from friends—and expect them to do the same

In recent years, scientists have shown that chimpanzees favor certain peers by picking whom they prefer to groom and selectively sharing food. The behavior offers a glimpse into humanity's prosocial evolutionary past. But a question has lingered: How might a chimpanzee friendship affect antisocial acts?

Read it at Phys.org ↗

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