Breed Page
No public dogs on record yet for this breed.
The Newfoundland was developed on the island of Newfoundland off the Canadian Atlantic coast, where they worked alongside fishermen hauling nets, pulling carts, and retrieving people and gear from the water. Early ancestry likely included indigenous dogs and European working dogs brought over by fishing fleets, and the breed shares deep roots with the Labrador Retriever, which developed from the same island stock. Newfoundlands were exported to England and Europe starting in the 18th century and became one of the iconic working dogs of the Victorian era. Numbers fell sharply during both World Wars, and the modern worldwide population reflects a series of rebuilding efforts after those bottlenecks.
The breed's short lifespan is driven mainly by cancer (particularly osteosarcoma), dilated cardiomyopathy, and subaortic stenosis. Hip and elbow dysplasia, cystinuria (DNA test available), and gastric dilatation-volvulus (bloat) are also concerns. Heat sensitivity is significant given the heavy double coat.
VGL has reported Newfoundlands carrying an average of around 6.55 alleles across the 33 STR loci, with an effective allele count near 2.67. The gap between average and effective alleles shows that while the breed retains some allelic variety, a smaller subset of common alleles is doing most of the genetic work. Preserving and redistributing the rarer alleles is the main lever breeders have. VGL testing has reported Newfoundlands with expected heterozygosity around 0.57 - modest numbers that reflect the breed's multiple historical bottlenecks. Individual IR values likely vary considerably given the breed's size and popularity swings. Breeders have room to improve the breed's genetic position by actively selecting less related pairings.
A 3D genetic map of enrolled Newfoundland dogs in the BetterBred database, based on allele-sharing distance across 33 STR loci. This is not a complete picture of the breed — it reflects only dogs whose owners have enrolled them. Drag to rotate · scroll to zoom · hover for dog names (public profiles only).
Historical founders — oldest 25% of enrolled dogs
Current gene pool — most recent 50% of enrolled dogs
Building plot… this may take a minute for larger breeds.
The Canine Diversity Test from UC Davis Veterinary Genetics Laboratory is the foundation of BetterBred’s breed management tools. Testing your dog adds to the breed database and gives you access to the full suite of breeding analysis tools.