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 ...

wrote headlines such as "Koko: Gorilla who mastered sign language" and "Koko, famed gorilla that learned sign language". Many social media users complimented her on her supposed language skills ...

Project Koko started as a PhD project to teach sign language to a baby gorilla, but as Koko began to communicate with Penny, an intense bond formed between them. Penny has now been with Koko for ...