11/18/2013

Researchers are using DNA profiling to track down the first "proto-dog," likely a gray wolf that was domesticated in Europe up to 32,000 years ago. Experts say the division of dogs into the breeds known today took a long time, with the earliest dogs remaining similar to modern wolves. "Modifying a wolf into a Chihuahua is clearly a long process," says researcher Olaf Thalmann.

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