The Anglo-Arabian, also commonly called Anglo-Arab, derives its name from its heritage as a deliberate cross between English Thoroughbred horses (Anglo) and Arabian horses. This breed represents one of the oldest and most successful sport horse crosses, combining the speed, size, and scope of the Thoroughbred with the stamina, hardiness, and refinement of the Arabian. The breed is registered with the Arabian Horse Association in the United States, which maintains an Anglo-Arabian division within their registry, and with various European registries including the French Stud Book (one of the oldest Anglo-Arabian registries established in the 1830s).
Historically, the Anglo-Arabian developed through different breeding programs in England and France, each with specific goals and registry requirements. French Anglo-Arabians have particularly strict breeding standards, requiring horses to be at least 25% Arabian blood with no less than 25% and no more than 75% Arabian heritage. British breeding programs were less restrictive, accepting any Thoroughbred-Arabian cross as Anglo-Arabian regardless of percentage. This difference in standards has created some variation within the breed, with French Anglo-Arabians typically showing more Arabian characteristics while British lines often favor Thoroughbred type.
The breed is sometimes referred to simply as "AA" in sport horse circles, particularly in endurance and eventing communities where they've established strong reputations. Some registries distinguish between Anglo-Arabian (meeting specific percentage requirements) and Arabian-Thoroughbred crosses that don't meet strict definitions, though many equestrians use the terms interchangeably. The scientific classification remains Equus ferus caballus, shared with all domestic horses, though the Anglo-Arabian represents a purposeful breed development rather than a distinct species or subspecies. Today's Anglo-Arabians compete successfully in dressage, show jumping, eventing, endurance riding, and combined driving, demonstrating the versatility this cross produces when combining two of the world's most influential horse breeds.
