Koko, the signing gorilla, made me uncomfortable. She was too intelligent, too intuitive, too human. I was wary of her, yet in awe of her. What disturbed me most is what Koko represented. She was the ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Koko, a western lowland gorilla known for her impressive sign language ...

"You key there me cookie." With that sign language, Koko the gorilla tells her mentor; 28-year old graduate student Penny Patterson, to get the key, open the closet and get a goodie out of the cookie ...

We ascribe human qualities to animals. Still, few of them get assigned as much humanity as Koko, the western lowland gorilla that purportedly could “speak” in sign language about 1,000 words, ...