The Quarab's body type may resemble more the stock-horse type with muscular forearm and gaskin and well-rounded hip, or the Arabian type with long, well-arched neck, long barrel, and level croup. The head usually shows refinement, large eyes, wide forehead, and slight to extreme dish in the face, depending on the ratio of Arabian to Quarter Horse blood. Height ranges from 14 to 16 hands.

.

The Racking Horse is attractive and gracefully built with a long sloping neck, full flanks, well boned, smooth legs and finely textured hair.The Racking Horse is considered a "light" horse in comparison with other breeds, averaging 15.2 hands high (a "hand" is considered to be four inches) and weighing 1,000 pounds.Colors may be black, bay, sorrel, chestnut, brown, gray, yellow, cremello, buckskin, dun, palomino, roan, champagne, and even spotted.

The horse must be of medium height from 14.2 to 16 hands, a wide chest sloping 45 degrees on the shoulder with bold eyes and well shaped ears. It must be of good temperament and easy to manage. All Rocky Mountain Horses have a solid body color. Facial markings are acceptable so long as they are not excessive. There may not be any white above the knee or hock.

Average measurements of Dons

	Stallions	Mares
Height	162	160
Body length	164	164
Chest girth	187.5	187
Bone below the knee	20.6	20.2

Colour
Most of the Dons are chestnut, often with a beautiful golden sheen. There are some bay and brown horses.