An international team of researchers led by archaeologist Dr. Angela Perri, of Durham University, UK, looked at the archaeological and genetic records of ancient people and dogs.
They found that the first people to cross into the Americas before 15,000 years ago, who were of northeast Asian descent, were accompanied by their dogs.
The researchers say this discovery suggests that dog domestication likely took place in Siberia before 23,000 years ago. People and their dogs then eventually travelled both west into the rest of Eurasia, and east into the Americas…
The Americas were one of the last regions in the world to be settled by people. By this same time, dogs had been domesticated from their wolf ancestors and were likely playing a variety of roles within human societies.
Nicely enough, they still do.