KOKO the gorilla has been the subject of many articles, videos and books.
She has been taught sign language, and knows over 1000 words. Her intelligence and her ability to think “outside the box” have been studied and reported for decades.
And KOKO just got a birthday present. See: Who doesn’t love a kitten?
For more about KOKO and her kittens, see: http://www.koko.org/koko’s-kittens