The kit fox has been thought by some to be a subspecies of the swift fox. This fox currently inhabits desert and semi-arid regions between the Sierra Nevada Mountains and the Rocky Mountains and on down into Baja California and the North Central states of Mexico; it is also found in the San Joaquin Valley of California. Learn more about the Vulpes macrotis, more commonly known as a Kit Fox, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.