Beginning in the 1970s, Koko the gorilla was also trained to communicate using sign language. Her sign vocabulary ranged from basics, like food and drink, to emotional signs, like sad, love, and ...

In 2001, Robin Williams shared a rare and deeply moving moment with Koko, the gorilla famous for her ability to communicate ...

Monkeys and apes, though both primates, exhibit distinct differences in anatomy, habitat, and evolutionary traits. Monkeys, with their tails and small ...

Koko, the western lowland gorilla who learned sign language and became a pop-culture phenomenon human celebrities clamored to rub shoulders with, has died.

The monkeys have been observed using special vocal calls, dubbed "phee calls," to identify one another in communication, according to a new paper in the journal Science.