(this time regarding cats)
1. Cats are required to use their front feet to further the progress of the ball. There's no need to declare a particular foot. It's not like baseball where the batter can bat right or left, but must choose when he gets to the plate. Each cat can use one or both front feet, but if a back foot is used in an unbecoming way, such as a cat that would lay on its back and thump a horse with a back foot, that cat will be disqualified and asked to leave the competition area immediately.