Koko’s Morality
Koko the gorilla is famous for mastering more than 1,000 signs based on American Sign Language, which she uses to communicate with Stanford researchers.
That’s not all she’s learned from humans. One day her attendants discovered that a steel sink in her enclosure had been torn from its moorings. When they confronted her, she pointed to her pet kitten.
“Cat did it,” she signed.
