Koko exhibits the classic annoyance expression of gorillas (and humans) — pursed lips.
Koko Looking Annoyed
Created On:
Posted On:
Photographer: Penny Patterson
![](https://www.koko.org/wp-content/uploads/2010/03/KokoLookingAnnoyed.jpg)
Created On:
Posted On:
Photographer: Penny Patterson
Koko exhibits the classic annoyance expression of gorillas (and humans) — pursed lips.
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