of horses, such as the Appaloosa, American Paint Horse, and American Cream Draft Horse, where foals with the proper pedigree for registration but do not meet the color standard for the breed, yet may still carry the necessary genetics in a minimally-expressed form, may be registered and bred to fully registered animals, with ensuing offspring eligible for registration if they meet the breed standard. Performance or merit Another form of open registry is a registry based on performance or conformation, called in some societies Registry on Merit. In such registries, an eligible animal that meets certain criteria is eligible to be registered on merit, regardless of ancestry. In some cases, even unknown or undocumented ancestry may be permitted. The Registry on Merit or ROM may be tied to percentage of bloodline, conformation, or classification or may be based solely on performance. In the horse world, many warmblood breed organizations require a conformation and performance standard for registration, and often allow horses of many different breeds to qualify, though documented pedigrees are usually required. Some breed registries use a form of ROM in which horses at certain shows may be sight classified. For example, at qualifying shows in Australia, winning horses of stock-type breeding receive points for conformation, which are attested to by the judges and recorded in an owner's special book. The points are accumulated to eventually result in a Registry on Merit. Registry on Merit is prevalent with sheepdog registries, in particular those of the Border Collie, and some other breeds with a heavy emphasis on working ability. In this type of ROM, the dog's conformation and ancestry generally does not matter. Papers Breed registries usually issue certificates for each recorded animal, called a pedigree, pedigreed animal documentation, or most commonly, an animal's "papers". Registration papers may consist of a simple certificate or a listing of ancestors in the animal's background, sometimes with a chart showing the lineage. Usually, there is space for the listing of successive owners, who must sign and date the document if the animal is gifted, leased or sold. Papers transferred upon sale of an animal may be submitted to the registry in order to update the ownership information, and in most cases, the registry will then issue a new set of papers listing the new owner as the proper owner of the horse. Genuine papers are often identifiable as containing the registered name and