What do they do? What is their purpose? They are small, but still large.

Those things are bred to be little, right? But how small can they get? Who decided that THAT is the size of a mini-horse? What if my idea of "mini" is "something that fits in my purse." Can they get that small?Can they get smaller? Can they eventually get so tiny that they are invisible to the naked eye?

This is going to need extensive reporting. Please follow up.

The wild horse is much bigger than a small pig, large pigs on average are 2' at the shoulder. A horse in the wild without human manipulation is on average 56" (4' 8") at the shoulder. Thats a big pig even here in Texas. =) Historical horses are still riden in mongolia and not bred for size and is one of the harshest climets on the planet. There are still wild unalterd horses around the world the true wild horse the Przewalski's Horse is stockily built in comparison to domesticated horses, with shorter legs. Typical height is about 13 hands (52 inches, 132 cm), length is about 2.1 m (6 ft 11 in). They weigh around 300 kilograms (660 lb). The coat is generally dun in color with pangare features, varying from dark brown around the mane (which stands erect) to pale brown on the flanks and yellowish-white on the belly and around the muzzle. The legs of Przewalski's Horse are often faintly striped, also typical of primitive markings.[11] The tail is about 90 cm (35.43 in) long, with a longer dock and shorter hair than seen in domesticated horses.