Yes, Toby, the horse that counts is an old phenomenon; there was one in France in the C18. He was 'counting', tapping a hoof, to the correct total because his trainer was giving a discrete signal at the point the horse should stop. Stopping the deliberate signal, once the trick was discovered, only proved the horse was a mind reader too! That was because the horse sensed some inadvertent movement, look, or expression of the trainer, or of the expectant audience, at the key moment and stopped tapping as a result. No deliberate signal was necessary. Magic!