Horse · United States
American Quarter Horse
also: Quarter Horse / AQH
Equiteca Editorial · Reviewed 2026-08-30 · 3 sources
The American Quarter Horse is the most popular breed in the United States, with more than 6 million horses registered by the AQHA since 1940. It is named for its speed over a quarter mile, a distance it can cover faster than any other breed. Built compact and heavily muscled, it excels at quick starts, sharp turns, and short bursts of power, which makes it the standard mount for Western riding, ranch work, and rodeo. It is prized for a calm, willing temperament that suits beginners and families. Most stand between 14.3 and 16 hands and weigh roughly 450 to 600 kg.
At a glance
Most stand 15 to 15.3 hands; stock, halter, and racing lines vary in build and size.
Temperament
Suited to
On price
Solid trail and ranch horses commonly sell for 3,000 to 10,000 USD; proven reining, cutting, and futurity bloodlines run well into six figures.
Care needs
Quarter Horses are hardy and thrive on good pasture, forage, and routine hoof and dental care. Easy-keeping lines gain weight quickly, so many owners limit grain and watch for the metabolic strain of obesity. Regular farrier visits every 6 to 8 weeks and a standard vaccination and deworming schedule cover most needs.
Common health issues
HYPP (Hyperkalemic Periodic Paralysis)
An inherited muscle disorder traced to the stallion Impressive that causes muscle tremors and episodes of weakness or collapse. A DNA test identifies carriers, and AQHA bars homozygous (H/H) foals from registration.
PSSM (Polysaccharide Storage Myopathy)
A muscle disease that causes tying-up, stiffness, and reluctance to move, more common in heavily muscled stock lines. It is managed with a low-starch, high-fat diet and consistent daily exercise.
Navicular syndrome
Chronic heel and front-foot pain seen in some working and stock lines, linked in part to small feet under a large frame. It is managed with corrective shoeing, workload changes, and veterinary care.
Colors
sorrel, chestnut, bay, black, brown, buckskin, palomino, gray, dun, roan, grullo
Questions people ask
Is a Quarter Horse a good first horse?
Often yes. The breed is known for a steady, forgiving temperament, and many older, well-trained Quarter Horses are ideal for beginners. As with any horse, judge the individual and its training rather than the breed alone.
Why is it called a Quarter Horse?
It is the fastest breed over a quarter mile, reaching speeds around 55 mph in a short sprint. The name comes from that quarter-mile racing history in colonial America.
What is HYPP and should I worry about it?
HYPP is an inherited muscle disorder found in some halter lines descended from the stallion Impressive. Always ask for the horse's five-panel genetic test results and avoid horses that carry it if you want a worry-free using horse.
How much does a Quarter Horse cost?
A sound, well-broke trail or ranch horse commonly runs 3,000 to 10,000 USD. Proven show, reining, or cutting bloodlines and started futurity prospects can cost far more.
Keep reading
Sources
Every figure on this page traces to one of these. We cite registries, associations, government and veterinary bodies, and published cost surveys - not other blogs.
- [1]Genetic Testing- American Quarter Horse AssociationregistryRegistry genetic-panel testing requirements; horses that test homozygous for HYPP (H/H) are no longer eligible for AQHA registration.
- [2]Quarter Horse & Related Breeds Disease Panel- Veterinary Genetics Laboratory, UC DavisstudyGenetic tests for the panel diseases of the breed, including HYPP and PSSM type 1 (a GYS1 mutation).
- [3]Hyperkalemic Periodic Paralysis (HYPP)- Veterinary Genetics Laboratory, UC DavisstudyHYPP is an inherited SCN4A muscle-channel disease traced to the stallion Impressive; homozygous (H/H) horses are more severely affected.