 Without a DNA test, Sabino-white horses are indistinguishable from dominant white horses.The "Sabino1" allele, and the associated spotting pattern, is found in Miniature horses, American Quarter Horses, American Paint Horses, Tennessee Walkers, Missouri Fox Trotters, Mustangs, Shetland Ponies, and Aztecas.Sabino 1 has not been found in the Arabian horse, Clydesdale, Thoroughbred, Standardbred horse, or Shire horse.