Volume 1 of the Bahrani stud book published in 1980 describes the breeding practice of the Al Khalifa family at the time. “No outside stallion is directly used for stud purposes. New blood is introduced indirectly by the high-caste mares received or exchanged with other Sheikhs from the interior of Arabia. When these mares are bred to local stallions, their progeny or grand-progeny will sometimes qualify as studs. The different strains or families of Arab horses are perpetuated through the mares, offspring always taking the dam’s name regardless of the stallion’s strain. Although all the strains found in Bahrain are equally pure, stud horses are chosen only from the strains deemed most noble. The word ‘noble’ here is the nearest equivalent to the Arab word ‘asil’ and does not convey the exact meaning. All tribes recognize the inherent mobility of certain strains but the preference for some strains over others varied from tribe to tribe. It was the custom in Central Arabia for the prominent Sheikhs to keep stud horses from a few selected strains only, but in some tribes after repeated breeding of these stallions with mares of a ‘new’ strain, the progeny of the letter gradually gained acceptance…