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In the ice age, the dire wolf was larger and more powerful than any modern-day wolf. Why did it vanish while the smaller, weaker gray wolf survived?
First Air Date : Aug 19, 2007
Last Air date : Oct 12, 2009
Episode : 7 Episode
Season : 1 Season
Runtime: 60:14 minutes
Studio: National Geographic
Country: United States of America
Cast:
Crew:
