Cast
![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 150"><rect width="100%" height="100%" fill="%23333"/></svg>)
Penny Patterson
Herself
Koko
Herself
Saul Kitchener
Himself - Director Emeritus, San Francisco Zoo
Carl Pribram
Himself - Professor of Neuroscience
Roger Fouts
Himself
Penny Patterson
Herself
Koko
Herself
Saul Kitchener
Himself - Director Emeritus, San Francisco Zoo
Carl Pribram
Himself - Professor of Neuroscience
Roger Fouts
Himself
