Western chimpanzee young male 'Peley' aged 12 years grooming young male 'Jeje' aged 13 years
Western chimpanzee young male 'Peley' aged 12 years grooming young male 'Jeje' aged 13 years - shows physical differences of related chimpanzees only 4 months apart in age (Pan troglodytes verus). Bossou Forest, Mont Nimba, Guinea. Dec 2010.
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