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Primate Behavior

Page 58

58) Early observers of gorillas were impressed with their threats and displays. Here an adult male stands on two legs and beats his chest. This gained the gorilla the reputation as a very aggressive animal. Actually they are among the most peaceful of the primates. Adult male silverback mountain gorilla stands bipedally while displaying in an African forest.

Notes: Adult male silverback mountain gorilla stands bipedally while displaying in an African forest.
Gorillas use a cupped hand position to make the sound associated with chest beating.
Photo © by: Bill Weber & Amy Vedder

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