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Koko Tickles Penny’s Foot

In this (1978) video from our KokoArc research database,  7-year-old Koko tickles Penny’s left foot, then signs to Penny to remove her other […]


Koko’s Holiday Gifts

In this video (KokoArc Video 570), Koko has just finished opening presents on Christmas Day. She received some bedding — sheets and blankets […]


Happy Gorilla Halloween

Enrichment comes in many forms and is an important part of captive gorillas’ lives as they rely on their human caregivers for all […]