Mainly Colts
Arabians.
A Clydsdale is one breed of Draft horse. If you breed a draft horse ro a regular horse, you get what is commonly called a "warmblood", which are heavier than regular horses, but lighter than draft horses.
a yealand pony or horse is a breed of horse
Arabians
The breed of horse is a Thoroughbred, it is the horse that the cars are named after.
Jockeys
No a Piston is not a breed of horse.
NO, people also like to race Quarter horse, Mules, Arabs and other breeds. No, most common race horses are thoroughbreds, but Quarter horses have also been known to do well. (There are many other breeds that race to.)
The pony horse
The largest breed of horse tends to be the percheron but other large horse breeds are drum horse, shire, clydesdale, Friesian, or really any draft breed.
Fresian horse is a breed of horse
Banei is a breed of horse, native to Japan. It is used in horse racing, and pulling heavy sleds in Banei Keiba races. It is descended from the Percheron, Breton, and Belgian.