dogs) must usually have simple, no-nonsense monikers deemed to be “working dog names” such as “Pal”, “Blackie”, or “Ginger”. The naming rules for independent dog clubs vary but are usually similar to those of kennel clubs. The registered name often refers directly or indirectly to the breeder of the animal. Traditionally, the breeder's kennel prefix forms the first part of the dog's registered name. For example, all dogs bred at the Gold Mine Kennels would have names that begin with the words "Gold Mine". Horse breeders are usually not required to do this, but often find it to be a good form of commercial promotion to include a stable name or farm initials in the horse's name. For example, Gold Mine Stables may name give all horses names with the prefix "Gold Mine", "GM", or "GMS". The Jockey Club, which registers Thoroughbreds in Great Britain, requires stable names to be registered, but does not require their use in animal names. Many dog breeders name their puppies sequentially, based on litter identification: Groups of puppies may be organized as Litter A, Litter B, and so on. When this is done, the names of all the puppies in litter A start with the letter "A," then "B" for litter B and so on. Horse breeders, especially in Europe, sometimes use the first letter of the dam's name as the first letter in the name of all of her offspring. Other breeders may use the same first letter to designate all the foals born on the farm in a given year. Some breeders create a name that incorporates or acknowledges the names of the sire, dam or other forebears. For example, the famous cutting horse Doc O'Lena was by Doc Bar out of Poco Lena, a daughter of Poco Bueno. Some names are a little less direct; 2003 Kentucky Derby winner Funny Cide was by Distorted Humor out of Belle's Good Cide, and the famous race horse Native Dancer was by Polynesian out of Geisha. Other breeders use themes. For example, a more imaginative breeder at the Gold Mine Kennels might name all the puppies of one litter after green precious stones: Gold Mine Emerald, Gold Mine Jade, and Gold Mine Peridot. Names for a subsequent litter might start with the adjectives describing precious stones: Gold Mine Sparkle, Gold Mine Brilliance, and Gold Mine Chatoyant. Breeders may be as creative or as mundane