Some racehorses were staying in a stable. One of them starts to boast about his track record. "Out of my last 15 races, I've won 8!" Another horse breaks in, "Well out of my last 27 races, I've won 19!" "Oh that's good, but out of my last 36 races, I've won 28," says another, flicking his tail.

At this point, they notice that a greyhound has been sitting nearby listening. "I don't mean to boast," says the greyhound, "but out of MY last 90 races, I've won 88!"

The horses are clearly amazed. "Wow!" says one, after a hushed silence. "A talking dog."