Arabian horse
The AHA was formed by a merger between the International Arabian Horse Association (IAHA) and the Arabian Horse Registry of America (AHRA) in 2003. AHRA was the older of the two organizations, a breed registry founded in 1908. IAHA, founded in 1950, organized to "meet the breeding, competitive and recreational interests of all Arabian horse owners", and also maintained a Half-Arabian and Anglo-Arabian registry.