Despite the fascinating geothermal features and natural beauty that highlights our snowmobile tour, it is still the wildlife of Yellowstone that captivates me most. I take this photograph of a big horned sheep in the Lamar Valley, accessible by car in Winter. Here, the roads are plowed so it doesn’t require specialized over snow equipment to see the many animals that graze the brush, or hunt their prey, in the lower altitude region of this northern valley of the park. The big horn sheep is a grazer, with few predators as an adult because of the rocky nature, and challenging mobility for predators, in the favored terrain of this animal. With this global photo story, I salute the adaptations that make big horn ship well-suited to its habitat.