Koko is one of a number of great apes in various experimental communication programs and is remarkably conversant in American Sign Language, used by hundreds of thousands of hearing-impaired people. With her linguistic skill, she asked for, and finally received, the small, tailless tabby kitten she promptly named All Ball.
All Ball was groomed, played with, cuddled and loved, and never once showed fear of her large foster-mother, outlandish though she might seem to feline eyes. The growing relationship was cut horribly short by All Ball's death beneath the wheels of a car. This is Smokey, Koko's more recent kitty friend.