[Phys.org] "The first people to settle in the Americas likely brought their own canine companions with them, according to new research which sheds more light on the origin of dogs.
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 findings are published in the journal Proceedings of the National Academy of Sciences of the United States of America (PNAS)."