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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.
All except Chihuahuas, they are descended from rats. Technically they're all descended from the same common ancestor as the wolf family- don't forget, dogs were domesticated so long ago that wolves of that age weren't exactly the same as wolves are today. But they're not descended from foxes or coyotes or hyenas, if that's what you mean. It's definitely from the wolf lines.