The mule came into being when humans tried to create a resilient animal that would be ideal for driving, riding, and packing. It is the product of the breeding between a female horse and a male donkey. A hinny is the product between the breeding of a male horse and a female donkey. Both mules and hinnies are usually sterile. A female mule is known as a jenny or molly, while a male mule is called a john or jack. Mules played a role in the development of America. They worked in teams that were as large as 20. They also helped tenant farmers in the south. Today, mules are popularly used for their traditional purposes and as western and English riding mounts. They are great high jumpers. Thus, they compete in the Coon Hunter’s Jump. They come in many different sizes from miniature to draft. Their size is dependent in the horse that was used for their breeding. For instance, a cross between a Belgian mare and an American Mammoth Jackstock creates a large red mule. When it comes to appearance, the mule has a straight neck, long ears, and usually comes with a brown coat with light markings.