A new large-scale study suggests that dogs, the man's best friend, had arrived in the US thousands of years after the first human migrants crossed to North America. This means that dogs might have first successfully migrated to the US only about 10,000 years ago.
This study is based on the analysis of the genetic characteristics of 84 individual dogs from more than a dozen sites in North and South America. The study is the largest analysis so far of ancient dogs in the US.
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