Watched by Koko's official photographer, Gorilla Foundation co-founder Ron Cohn, I open up the bag of goodies I bought at Toys R Us and flick through a picture book on zoo animals, touching each ...

Koko, the celebrated western lowland gorilla, died at the age of 46 this week. Many people paid tributes to her by praising her signing skills. She's famous for her signing skills, but all is not ...

Koko the gorilla, who is said to have been able to communicate by using more than 1,000 hand signs, has died in California at the age of 46. Instructors taught her a version of American Sign ...