The Northern Pygmy Mouse (Baiomys taylori) is the smallest rodent in North America. Within the U.S., it may be found in parts of Texas, as well as in some areas of Arizona and New Mexico. It occurs southward well into Mexico. The one shown in the top 6 images on the left was in Bastrop Co., Texas, in January, 2008. These images were shot with a Canon EOS 40D.