The most obvious answer to this question for the Tibetan Spaniel owner is the Tibbies.net database and this answer will be explored later in more detail. However, most breeds of dog do not have such a wide open research mode available to them. Other means are available with considerably more depth of inquiry, and considerably more effort expended. Good sources include The AKC Stud Book Register, the AKC Pedigree Service, private Pedigree Services, Foreign Country Stud Book registers, Breed Club Year Books both foreign and native, and private collections of pedigree records.