This article from Smithsonian magazine is about the migration of humans and their dogs 9,000 years ago.
"Europe’s First Dogs Disappeared After Neolithic Farmers Arrived With Their Own Pups. Genetic analysis shows ancient canines from the Near East slowly replaced indigenous dog populations of that period."
Click here to read the article: smithsonianmag.com/first-farmers-brought-their-doggos-with-them-europe