Greenland Dog

Arguably the best genetic case of all. A 2020 study compared modern Greenland sled dogs with a 9,500-year-old dog from Zhokhov Island in Siberia and found continuity in the Arctic sled-dog lineage across that span, with the Greenland Dog the least mixed with other breeds. Greenland protects that by law: in its sled-dog districts north of the Arctic Circle and in the east, no other dogs may be kept. This is a pack-minded working dog, not a sofa companion.