Read MoreWild chimpanzees seek out medicinal plants to eat when they are sick or injured, a study says.Wild chimpanzees seek out medicinal plants to eat when they are sick or injured, a study says.
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Read MoreWild chimpanzees seek out medicinal plants to eat when they are sick or injured, a study says.Wild chimpanzees seek out medicinal plants to eat when they are sick or injured, a study says.