Endemic Animals of Arizona

The Merriam's elk (Cervus canadensis merriami ) is an extinct subspecies of elk once found in the arid lands of the southwestern United States (in Arizona, New Mexico and Texas), as well as in Mexico. Uncontrolled hunting and cattle grazing since the arrival of Europeans had driven the subspecies into extinction around the beginning of the 20th century, with the exact presumed date being 1906. Another subspecies of elk, the eastern elk (Cervus ...
canadensis canadensis ) also became extinct at roughly the same time. Not much else is known about this subspecies as it became extinct before studies were done. Elk from Yellowstone National Park were introduced to this area in 1913, and are reasonably common in the area today. Less

The Kaibab squirrel (Sciurus aberti kaibabensis) is an elusive isolated tassel-eared squirrel that lives in the Kaibab Plateau. It is now considered a subspecies of the Abert's squirrel (Sciurus aberti). This squirrel is not found anywhere else in the world. In 1965, 200,000 acres (810 km2) of Kaibab squirrel habitat within Grand Canyon National Park and Kaibab National Forest were declared the Kaibab Squirrel National Natural Landmark. Less

The mesquite mouse (Peromyscus merriami ) is a species of rodent in the family Cricetidae found in Mexico and in Arizona in the United States. Less