Scientists have long agreed that the closest living relatives of dogs are wolves, their link confirmed by both anatomy and DNA. Somewhere, at some point, some wolves became domesticated. They evolved not only a different body shape, but also a different behavior. Instead of traveling in a pack to hunt down prey, dogs began lingering around humans. Eventually, those humans bred them into their many forms, from shar-peis to Newfoundlands.
November 15, 2013
Are Dogs "Chinese" or "European": the DNA Debate Continues
And it is summarized in this New York Times article, "Wolf to Dog: Scientists Agree on How, but Not Where."