https://apnews.com/e7aa86fc9f73443a9c78b10126f8f50e

NEW YORK (AP) — A new study provides fresh evidence that the first dogs of North America all but disappeared after the arrival of Europeans.

An international team of researchers says the only surviving legacy appears to be a cancer that afflicts dogs that arose from the cells of a dog that lived more than 8,000 years ago and has since spread to other canines around the world.