The Thoroughbred is the fastest and most valiant horse breed in the world.The breed consists of a mixture of different equine breeds. The genealogical registries of the first English and Irish breeds are still conserved. It has had a major impact on racehorses, bringing to them better aesthetics, speed and resistance. The evolution of the Thoroughbred goes back to the cross between three oriental horses, considered the three founding sires of the breed: the Byerly Turk, the Darley Arabian and the Godolphin Arabian. The cross was made with traditional English "racers" and they were raised in real herds on the British Isles.
The best time for a racing specimen was achieved in Epson, England, when a horse from this breed reached an average of 77 kilometers/hour. All thoroughbred horses that compete in races are registered in the genealogical books of horses from their birth country. When horses destined for racing become of age, they begin a training involving learning to accept the weight and direction of the rider. Though some two-year-old horses participate in races, a Thoroughbred horse is at its best between the ages of three and five; however, this is not a basic rule as there are specimen that have successfully competed at the age of ten.
There are races where males and females are separated, but the majority are open to both sexes. A mare is known as a filly until she is five years old and then she immediately becomes a mare. A castrated male of whatever age is a gelding. A male, not a gelding, is a colt until he reaches five years of age and then becomes a stallion, or simply a horse. The hallmark that distinguishes Thoroughbreds is that they are usually excitable and very sensitive horses, with a light gallop and a firm stride.
Its average height is between 162 and 164 centimeters. The coat colors are regularly presented as: sorrel, chestnut, bay, dapple gray, or roan. Its body is long and slender with small proportions and a straight profile. This breed's kidneys are stronger than those of a normal horse, giving it more galloping power. The hind legs are bigger and longer, while the forelegs are slender, with muscular forepaws and big, flat joints. The measurement of the bone below the knees is less than 20 centimeters.
Its head is chiseled and always alert, without too much flesh on the jaw. The nostrils are big for rapid oxygenation. This breed΄s back is usually long and very slanted with prominent withers that allow long, low, efficient strides.