Monkeys reject unfair food rewards, demonstrating a sense of fairness. Research shows capuchins and chimpanzees refuse ...
Venezuelan Red Howler (Alouatta seniculus). They inhabit rainforests and mountain forests of Central and South America. The loudest monkey. Morning roar of a red howler. Close-up.© ...
A colony of African vervets in Dania Beach raises big questions about how humans can and should manage nonnative species.
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