Whether Koko is imitating sign language or actually communicating is still a matter of curiosity. But it is clear that she is an intelligent being. I truly believe she is communicating. Maybe Koko was talking about the cemetery when she said a cozy hole, maybe she knew where to go when she died, we don't know. But her last words are sure to be impressive.

The caretaker showed Koko a skeleton and said, "Is this alive or dead?" asked Koko. "Dead, covered," replied Koko. The caretaker asked, "Where do animals go when they die?" “It's a cozy hole,” Koko said. Then he kissed her goodbye. “Koko's response surprised many people and left a lot of philosophical debates behind.


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