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"Kuba," an adult male chimp, photographed during a grooming session. | Ammie Kalan
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Chimps 'Talk' About Their Favorite Foods, Trees

Chimpanzee calls are much more sophisticated than previously thought -- they describe preferred food and the trees they grow on.

January 19, 2015
7:30 AM EST
Researcher Ammie Kalan recording chimp vocalizations in the Taï Forest. | Ammie Kalan