In this 2013 photo provided by Rolf Peterson one of the few remaining gray wolves on Isle Royale, Isabelle, talkes refuge on an icy bluff over Lake Superior to lick her wounds after being attacked by other wolves. During this winter's prolonged deep freeze, Isabelle escaped from the island to the mainland across the frozen surface of of Lake Superior. Scientists said Tuesday, Feb. 25, 2014 that the five-year-old female gray wolf was found dead earlier this month along the shoreline on the Grand Portage Indian Reservation in northeastern Minnesota. (AP Photo/Courtesy Rolf Peterson)
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