Thoroughbreds are considered hot-blooded horses that are known for their agility, speed, and spirit.The thoroughbred, as it is known today, was developed in 17th- and 18th-century england, when …Thoroughbred, breed of horse developed in england for racing and jumping (see photograph).The origin of the thoroughbred may be traced back to records indicating that a stock of arab and barb horses …Welcome to equibase. com, your official source for horse racing results, mobile racing data, statistics as well as all other horse racing and thoroughbred racing information.Find everything you need to know …