7.048
85 min
A documentary that follows Dr. Penny Patterson's current scientific study of Koko, a gorilla who communicates through American Sign Language.
| Name | Character | Team | |
|---|---|---|---|
| Penny Patterson | Herself | Unowned | |
![]() |
Koko | Herself | Unowned |
| Saul Kitchener | Himself - Director Emeritus, San Francisco Zoo | Unowned | |
| Carl Pribram | Himself - Professor of Neuroscience | Unowned | |
| Roger Fouts | Himself | Unowned |