Glossary

Foundation Stock Service

An AKC record-keeping program for rare breeds not yet fully recognised, letting breeders register dogs on the way to full recognition.

Also called: FSS, AKC FSS, AKC Foundation Stock Service, miscellaneous class

The Foundation Stock Service, or FSS, is a program of the American Kennel Club that keeps records of purebred dogs from breeds not yet fully registered. It lets breeders build a documented pedigree for a rare breed so the dogs are not lost from the record while the breed develops.

Breeders have to document parentage, and over time a national breed club can ask for full recognition. A breed can then appear in the Miscellaneous class at shows before it joins one of the seven groups. Breeds such as the Spanish Water Dog and Xoloitzcuintli moved through this pipeline.

FSS records are not a quality mark. They mean a dog is known and traced. For a dog from a rare breed, ask the breeder about health testing and genetic diversity.

Last reviewed November 8, 2026

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Related terms

Kennel registry An organisation that keeps records of dogs and their parentage, issues registration papers and pedigrees, and often runs shows and sports. Purebred A dog whose parents and ancestors belong to one recognised breed and are recorded in a registry, so its ancestry can be traced on paper. Breed standard The written description of an ideal dog of a breed, covering size, proportions, coat, colour, movement and temperament, used to judge dogs and guide breeding. Genetic diversity The variety of genes within a breed or population; closed stud books and heavy use of a few popular sires reduce it and make inherited conditions more common.