Thirty-nine British and Irish native dog breeds now classed as vulnerable

Thirty-nine British and Irish native dog breeds are currently identified by the Royal Kennel Club as vulnerable, a designation applied where fewer than 300 puppies of a breed are registered each year. The list includes the Otterhound, the Dandie Dinmont Terrier, the English Toy Terrier, the King Charles Spaniel and the Cardigan Welsh Corgi — breeds with long histories in these islands, many originally developed for herding, hunting, guarding or other rural working roles, but now rarely seen in parks or family homes.

The numbers behind the list are stark for the rarest breeds. The Royal Kennel Club reported in August 2026 that only three Otterhound litters had been registered that year to that point. Populations at this scale raise practical questions about genetic diversity: a very small breeding pool narrows the choices available to breeders, makes it harder to avoid accumulating relatedness across generations, and increases the risk that inherited conditions become fixed within the breed.

For breeders working with any numerically small breed, this is the case for deliberate management rather than chance. Coefficient of inbreeding calculations, health screening appropriate to the breed, and thinking several generations ahead when selecting a mate all matter more, not less, when there are few animals to choose from. The Royal Kennel Club points to awareness raising, responsible breeding practice and research into breed health and genetic diversity as the routes by which it hopes to secure a future for these breeds, and breed clubs remain the first place for prospective owners and breeders to seek breed-specific guidance.