Nora the piano cat is now nearly 8 years old but when she was adopted at age one it was inconceivable that she would turn into such a phenonomen. She even has her own Wikipedia page. Students that she duetted with put a video on Youtube and an orchestra have composed a concerto to accompany her playing.
Apparently she is not trained or forced into playing but simply does so several times a day. It would appear that she is passing on her skill to others including human students. I was enchanted. There are other videos on Youtube of her playing in a more informal setting!
Read more at http://en.wikipedia.org/wiki/Nora