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Who let the dogs in? We did, about 30,000 years ago

Josh Brones, president of the California Houndsmen for Conservation, walks his hunting dogs, Dollar, left, Sequoia, center and Tanner right, near his home in Wilton, Calif., in 2012. 

A new study suggests that canis lupus familiaris split from wolves much earlier than the 11,000 to 16,000 years ago that was long assumed.