Penny holds up a rather large mirror for Koko so that Koko can examine her mouth. Do you think gorillas are self-conscious about having spinach stuck between their teeth, the way humans are?
Koko needs a BIG mirror
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Photographer: Ron Cohn
Source: 070305_S3_IMG_2680.jpg
![](https://www.koko.org/wp-content/uploads/2010/03/070505_IMG_2680_k_mirror-600x420.jpg)