"American Wolf" tells the story of O-Six, who in some circles was the world's most famous wild animal. The female alpha wolf was collared and tracked by researchers at Yellowstone National Park, gaining a huge following from not only scientists but the public as well. She was shot by a hunter in 2012 just outside the park's boundaries, an act that caused howls around the country despite it being legal - wolves were scaled back from endangered species' lists, so there were new population control measures in place.