The Inyo Shrew, also known as the Great Basin Dwarf Shrew, is a tiny, pale gray animal, only slightly larger than the closely-related Dwarf Shrew. Both species are found in the mountains of the Southwest, but their ranges are not known to overlap. Learn more about the Sorex tenellus, more commonly known as an Inyo Shrew, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.