Complex sentence: The registered name often refers directly or indirectly to the kennel where the dog was bred; kennel clubs often require that the breeder's "kennel prefix" form the first part of the dog's registered name.
Split into simpler sentences: The registered name often refers directly or indirectly to the breeder of the animal. Some Kennel clubs require that the breeder's "kennel prefix" form the first part of the dog's registered name.