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Animal entries
Pedigree analysis
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Animal entries

The Breed Archive for Rat Terriers is intended for pure-bred dogs registered with internationally recognised registries of purebred dogs. To keep our archive clear and reliable we cannot allow dogs without papers (except for ancient ancestors of the breed).

To be accepted, dogs must be registered with a national registry (e.g., American Kennel Club in the United States, Canadian Kennel Club in Canada) or must have a worldwide registration with United Kennel Club (UKC) or Fédération Cynologique Internationale (FCI).

In some countries breeders are not required to register the full litter or each individual dog. In accordance with the American Kennel Club’s ''eligible for registration'' requirement, we take the position that if any one dog in a litter is registrable, every dog in the litter is registrable. Even if a breeder, or the new owner choose not to register a particular dog, the dog in question remains a purebred Rat Terrier and is therefore eligible for inclusion on the Breed Archive.

Pedigree analysis

We offer an extensive pedigree analysis page for each animal stored in the TBA database. This analysis contains the inbreeding coefficient (Wright's formula), ancestor loss, the partial inbreeding coefficient, the blood quota and more.

Please note: The pedigree analysis is based on the information in the database and is only accurate to that extent.

You can find a link to the pedigree analysis page on each animal's detail page and on the testmating page.

The pedigree analysis page calculates the inbreeding coefficient, ancestor loss, blood quota and the partical inbreeding coefficient (only up to the 5th generation) for a particular animal or testmating.

For details on the calculations study the tooltip information on the pedigree analysis page.