The Wilderness area has fauna typical of the American Southwest: Mule deer, Elk, Wild Turkey, Peccary, Black bear and Cougar.
Leopold II of Belgium | Leopold Stokowski | Léopold Sédar Senghor | Leopold II | Leopold I, Holy Roman Emperor | Leopold I of Belgium | Leopold Auer | Leopold III of Belgium | Order of Leopold | Leopold Mozart | Leopold II, Holy Roman Emperor | Leopold I | Leopold Bloom | Ah, Wilderness! | wilderness | National Wilderness Preservation System | Leopold von Ranke | Leopold III, Duke of Austria | Leopold | Battle of the Wilderness | Aldo Rossi | Aldo Leopold | Order of Leopold (Belgium) | Leopold Zunz | Boundary Waters Canoe Area Wilderness | Aldo Tambellini | The Wilderness Society (United States) | The Wilderness Society | Mario Aldo Montano | Leopold Wenzel |
By the time the Gila trout was listed by the U.S. Fish and Wildlife Service in 1967 its range had reduced from several hundred miles of stream to just 20 in the Gila Wilderness and Aldo Leopold Wilderness.