All Ball was a pet cat of Koko, the famous gorilla living in Woodside, California, who communicates through sign language. In the summer of 1984, Koko asked her trainer, Dr. Francine 'Penny' Patterson,... continue reading
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Created: 1 decade 5 years 11 months 1 week ago
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Updated: 8 years 7 months 1 week ago
Views: 2,180