Back in the 17th century, when oddities and strange animals were irresistible to the nobility, horses that were smaller than the norm were set aside and used in breeding programs across Europe. When crossed with the Shetland Pony, these smaller horses produced even smaller offspring. Those offspring with a less refined appearance were inevitably used in the mines as pit ponies, hauling carts of supplies and materials. Those more attractive ponies found their way into circuses and shows throughout the continent.
Over time, other breeds were added to the mix. The Hackney brought a little more refinement. Horses with pinto coloring were used to introduce new colors. Eventually, with selective breeding, horses that resembled smaller versions of Arabians, American Quarter Horses, and others came about, especially as the Miniature Horse spread throughout Europe and North America.
Unlike other breeds, Miniature Horses are measured in inches, not hands. They should stand no more than 34 inches at the base of the mane at the withers. That's under 3 feet, so these guys are a little small. For this reason, they are not ridden, not even by children. Despite this, they are vastly popular and available in practically every color, including palomino, pinto, and a strange pattern called Pintaloosa, which is really a cross between a pinto and an Appaloosa.
Though they cannot be ridden, Miniature Horses are used today for driving and in-hand classes such as obstacle courses and halter. For more information about this adorable breed, contact the American Miniature Horse Association.