In several previous experiments, sign language has been taught to chimpanzees, but this is the first real attempt with a ...

Koko, the western lowland gorilla who learned sign language and became a pop-culture phenomenon, died Thursday morning at the age of 46. The Gorilla Foundation, headed by Dr. Francine “Penny” ...

A heartwarming video has showcased the way a deaf dog has built up a way to communicate with her owners, despite not being able to hear. Faith, a 3-year-old mixed breed, was born deaf, but owner Nikki ...