Ancient Dogs of the Americas Were Wiped Out by European Colonization

Ancient dog skeletons
Two dogs buried together in Illinois. The remains date back to between 660 to 1,350 years ago. Credit: Courtesy of Illinois State Archaeological Survey, Prairie Research Institute.

Ancient dogs arrived in the Americas alongside humans more than 10,000 years ago but were later wiped out by European colonization, a new study suggests. In fact, besides a few genes in some modern dogs today, the only trace of the original American dogs in today's canines is found in the form of a common canine tumor, according to the study, published today (July 5) in the journal Science.

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