Koko the Gorilla

Female gorilla research subject more on Wikipedia

Lawsuit Over Koko the Gorilla's Nipple Fetish Resolved 6yrs
Koko the Gorilla, Famous for Using Sign Language, Has Died 7yrs
Koko the Gorilla, famous for learning sign language dies at 46 7yrs
Koko the Gorilla, Famous for Learning Sign Language, Has Died 7yrs

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