Laramie, WY – The first grey wolves were re-introduced to Yellowstone National Park almost ten years ago. The controversial event means different things to different people. To some, the return of the grey wolf does nothing but pose a direct threat to livestock operations and big game herds. For others, it's a remarkable conservation success story. Nez Perce Tribal member Levi Holt says wolf restoration is an historical event for the Nez Perce because of what the animals means to his people. From the original 66 wolves reintroduced ten years ago, the Northern Rockies population is now over 700.