Horse pulling is a draft horse competition where horses in harness, usually one or two animals, pull a stone-boat or weighted sled and the winner is the team or animal that can pull the most weight for a short distance. There are different weight classes and strict rules to avoid animal cruelty. The Belgian horse is the breed most frequently seen, but other draft breeds are also used. There are also competitions for ponies, where they pull significant weight relative to their size, but usually for shorter distances than full-sized horses.