Researchers led by Olaf Thalmann of the University of Turku in Finland used prehistoric genomes
First read that as prehistoric gnomes, strange how my mind works...
A boffinry brawl is taking place over the origin of the domesticated dog, with a new study suggesting that man's best friend came from Europe, not from the Middle East or East Asia as previously thought. Wolves Researchers led by Olaf Thalmann of the University of Turku in Finland used prehistoric genomes to come to the …
I've just skimmed the paper. Although its not my field at all, they have thought about alternatives.
E.g. this quote: "We consider this scenario unlikely as it would require a common recent coalescence of these ancestral wolf and dog sequences from geographically disparate areas. Nevertheless, ..."
But there are plenty of caveats scattered through the paper -- as with lots of this sort of science, their eurodog hypothesis is the most reasonable conclusion >>given the available evidence<<.
I rather suspect it was a parallel development.
The rate of spread of any development, be it a new stone tool, bow and arrow or domestication of an animal would have been glacial.
It wasn't until the beginning of the bronze age that communication of new technologies moved at the rate of snail mail.
It all depends on the environment they are in. Wolves tend to be very shy around humans and normally stay away from them, but ones that live in areas that they are protected (like Yellowstone National Park) and have many tourists tend to desensitize them to humans. My daughter has a high content wolfdog and she (the dog) is much more wary of various things than a regular dog breed. With that said, she is not aggressive to other dogs or cats around the house and is actually very outgoing with many people too, but is very discriminating on who she will associate with. A lot of this comes with training and interaction at a very young age, before they get set in cautious ways. Wolfdogs and wolves are not something for a beginning pet owner to even think about acquiring as their companion. Note that I said "companion" and not "pet", as they aren't an animal you just throw in the back yard or on a chain. That is bad enough for a domestic dog breed but is asking for trouble with an animal with wolf bloodlines.