Curled horns clash . Hooves grip steep slopes . Meet the bighorn sheep! Brimming with vivid photos and scientific facts, this middle-grade nonfiction book treats researchers and wild animal lovers to a comprehensive profile of these mighty mountain mammals. It covers zoology topics such as anatomy, diet, habitat, and life cycle, as well as species conservation efforts and the animals' relationship with humans throughout history. Sidebars, a range map, and a glossary support the main text, while an American Indian tale about the bighorn sheep adds a cross-curricular cultural layer to the title.