Gorilla Uses Sign Language to Call for Dentist

August 9, 2004 by Kevin D. Hendricks | Filed under: Monkey News

When 300-pound gorilla Koko had a toothache, she asked for a dentist. Koko is famous for mastering more than 1,000 American Sign Language signs. She made the sign for pain and pointed to her mouth. Dentists and veterinarians were dispatched to extract a tooth.