The project was initiated by dr Patterson began teaching sign language to koko in 1972, when koko was one year old. Francine patterson in 1972 and is still continuing today
Planoly Creator Store | Koko Yamada (≧ ≦)
The education of koko is the cooperative effort of eugene linden and francine (penny) patterson.
A female gorilla born at the san francisco zoo on july 4th, 1971
Koko learned sign language from her trainer, dr
