How Wolf Puppy Behavior Affects Adult Behavior

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We can't go back in time to see how wolves evolved into dogs. But we can get some clues to better understand how it could have happened by comparing dogs to modern-day wolves. Catherine is working with wolf puppies to understand their behavior and pinpoint precisely how dogs and wolves differ today. When they're really young, dogs and wolves basically act the same but by about a month, they're completely different.

Dogs were the first domesticated animal in history, emerging from wolves some 20,000 years ago. But how did wolves become dogs? To find the answer, scientists have to play with a lot of puppies.

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