An American Warmblood is a sport horse developed primarily in the United States, bred for disciplines like dressage, show jumping, and eventing. It is not a single breed but a performance-based registry that values athleticism, trainability, and good conformation. Horses are registered based on their abilities and inspections rather than strict pedigree, and they may descend from a variety of bloodlines including traditional warmbloods, Thoroughbreds, and Arabians.