This polar bear photo from Churchill Wildlife Management Area is a pair of sub-adult males sparring out on the tundra. Polar bears spar or mock fight in the fall prior to ice forming on the Hudson Bay. These confrontations are for the most part acknowledged by the polar bears as mutually beneficial. However sometimes the bouts get a little heated in the frigid north and a friendly training exercise draws some blood. Witnessing these incredible battles of polar bears truly is a once in a lifetime experience!