A Moral Tale*
There have been many claims for horsed that could count, but Sugar left them all far behind. He could count to one hundred, and also add, subtract, multiply and divide. Unfortunately, his master decided to try him on some elementary anaylytic geometry, which so frightened him that he ran off and was never seen again.
Moral: Never put Descartes before the horse.
*Taken from The Penguin Book of Curious and Interesting Mathematics, by David Wells