Koko demonstrates “Frown”. She can frown when she is sad or upset, just like we can.
Koko”s “Frown”
Created On:
Posted On:
Photographer: Penny Patterson
![](https://www.koko.org/wp-content/uploads/2010/03/021119_Kfrown.jpg)
Created On:
Posted On:
Photographer: Penny Patterson
Koko demonstrates “Frown”. She can frown when she is sad or upset, just like we can.
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