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

October 1, 2026 · 3:20 pm 1 sources

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• Chimps plunder less pineapple from friends—and expect them to do the same
  Phys.org · October 1, 2026 15:20
  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…