Koko and Penny look through some issues of National Geographic Magazine with articles about mountain gorillas. Koko points to one photo of a mountain gorilla family and signs “gorilla there.”
Koko recognizes herself in others
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Photographer: Ron Cohn
Source: 061222_S3_IMG_1950.jpg
![](https://www.koko.org/wp-content/uploads/2010/03/070129_IMG_1950_k_NG-600x420.jpg)