Cart pullers are animals that are used to pull carts or wagons. The most common cart pullers are MULES, OXEN, DONKEYS, and ASSES. MULES are a hybrid of a horse and a donkey, and they are known for their strength and endurance. OXEN are a type of cattle that are used for pulling heavy loads. DONKEYS are small, sturdy animals that are often used as pack animals. ASSES are related to DONKEYS and are also used as pack animals. All of these animals are used to pull carts and wagons in various parts of the world.