Chimpanzees steal less pineapple from their friends

How likely is a chimpanzee (Pan troglodytes) to steal food from another chimp? It depends on whether they’re a friend or a foe. A team of biologists discovered that chimps pilfer less from their friends, and that the relationship between the victim and the thief influenced the emotional display of both parties. The findings are described in a study recently published in the journal Evolution and Human Behavior.The team conducted experiments with chimpanzees from Uganda’s Ngamba