I don't think the evidence supports that. While some scientists (Konrad Lorenz, for example) thought that the golden jackal and grey wolves hybridized and formed dogs, the evidence suggests that dogs are entirely, or nearly entirely grey wolf. The interesting thing is, genetic and behavioral data suggests that the human/dog symbiosis was a mutually-accepted one, in which humans also evolved to adapt to dogs.
Dogs have amylases, that allow them to eat and digest more human-style foods. Humans are more wolf-like in their loyalty to each other than most other primates are. I think the most important selection by humans was for a more docile and submissive animal. However, pack structure made wolves largely pre-adapted to become so, and their habit of caring for the offspring of any member of the pack tended to make them gentle and protective of childen, while their ability to submit and cooperate with a dominant pack leader made them able to work with and obey humans.
With human intelligence and weaponry, and the wolf ability to track and run, that symbiosis produced predators unlike anything the Earth had seen before. Almost as if we were made for each other. God works in mysterious ways, um?