number of the individual animal and its date of birth, the name of the attesting organization, with the logo if there is one, the name and signature of the registrar or other authorized person, and a corporate stamp or seal. Documentation usually included on registration certificates or papers includes: name of sire (father) and dam (mother) names of other ancestors, to the number of generations required by the issuing organization In dogs, details of the litter this animal came from its colour and markings name, address and registered number of the breeder (often defined as the owner of the female at the time of the animal's conception or birth) name and address of the original owner who registered the foal. Registration papers are sometimes used as certificates of title, although legally they are not such, unlike vehicle and airplane registration papers. Crossbreeding and backbreeding In some registries, breeders may apply for permission to crossbreed other breeds into the line to emphasize certain traits, to keep the breed from extinction or to alleviate problems caused in the breed by inbreeding from a limited set of animals. A related preservation method is backbreeding, used by some equine and canine registries, in which crossbred individuals are mated back to purebreds to eliminate undesirable traits acquired through the crossbreeding. Registered names and naming traditions Naming rules vary according to the species and breed being registered. For example, show horses have a registered name, that is, the name under which they are registered as a purebred with the appropriate breed registry, and purebred dogs intended for the sport of conformation showing must be registered with the kennel club in which they will compete; and although there are no specific naming requirements, there are many traditions that may be observed in naming. Along with a registered name, these animals often also have a simpler "pet name" known as a call name for dogs or a stable name for horses, which is used by their owners or handlers when talking to the animal. For example, the famous Thoroughbred race horse Man o' War was known by his stable name, "Big Red." The name can be anything that the animal's owner prefers. For example, the dog that won the 2008 Westminster show (US) was named K-Run's Park Me In First, with the call name of "Uno". Dogs in the breed registry of a working dog club (particularly herding