Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Photo: Gray's crowned guenon (Cercopithecus pogonias grayi ) at the Cincinnati Zoo. There are five individuals left of this species in captivity.

ANI040-00218

Gray’s crowned guenon (Cercopithecus pogonias grayi ) at the Cincinnati Zoo. There are five individuals left of this species in captivity. All five reside at the Cincinnati Zoo.

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This photo © Joel Sartore 2017. Image usage guidelines

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