| Answer | Crossword Clue |
|---|---|
| KOKO | Gorilla trained to use sign language |
| KOKO | Gorilla famously taught to use sign language |
| WASHOE | First ape trained to communicate with humans in sign language |
| KOKO | Gorilla that learned sign language |
| KOKO | Gorilla pioneering in sign language |
| KOKO | Gorilla skilled in sign language |
| KOKO | Gorilla who learned sign language |
| KOKO | Gorilla who was famously taught sign language |
