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Origin of the domestic dog. This article is about the origin of the domestic dog. For dog breeding, see Dog breeding. The origin of the domestic dog is not clear. Whole genome sequencing indicates that the dog, the gray wolf, and the extinct Taymyr wolf diverged at around the same time 27,000â40,000 years before present (YBP). These dates imply that the earliest dogs arose in the time of human hunter-gatherers and not agriculturists.
Wolves are the ancestors of all domestic dogs. There are two species of wolves in North America. The smaller species is the red wolf, Canis rufus, which has shorter, redder fur than the gray wolf. The gray wolf, Canis lupus, has thicker fur which is more gray or golden, and is larger than the red wolf.