FILE - This image provided by Yellowstone National Park shows a wolf walking through the snow in Yellowstone National Park in Wyoming. U.S. Fish and Wildlife Service is expected to anno

 

              FILE - This image provided by Yellowstone National Park shows a wolf walking through the snow in Yellowstone National Park in Wyoming. U.S. Fish and Wildlife Service is expected to anno
FILE - This image provided by Yellowstone National Park shows a wolf walking through the snow in Yellowstone National Park in Wyoming. U.S. Fish and Wildlife Service is expected to announce Friday Aug. 31, 2012, that it is ending protections for wolves in Wyoming. (AP Photo/Yellowstone National Park, File)