Where did GOOD BOY come from? New study by Marsh et al reveals the origin of dogs.

In Palaeolithic Europe, dogs were spread 16,000 years ago by the ancestors of Mesolithic WHG (Cheddar man), the Epigravettians. They spread dogs not only to other Europeans (Magdalenians), but also to Anatolian HG's and other Near Easterners, where dogs later picked up local Syrian-like wolf admixture in the Neolithic, while those back in Europe did not mix with local wolves. So most dogs used to be of European origin.

Over 9000 years ago the westward movement of EHG people from Siberia and Eastern Europe, brought with them a divergent dog lineage. This Eastern dog admixture accounted for on avg 43.8% of dog ancestry in the Mesolithic Balkans. The Eastern doggo admixture was distributed more widely with the Indo-Europeans (largely of EHG descent) of the late Neolithic and Early Bronze Age so that it accounts for 33% of Bronze age European dog ancestry, and about 20% in modern breeds.