West and central United States and Mexico from northern California, southern Idaho, southeastern Colorado, and southwest Kansas south to Tamaulipas, San Luis Potosi, Jalisco, and central Baja California.
Can be found in dry prairies, shrubland, deserts, and grasslands. Stays underground or under natural cover during the day; females will also lay their eggs in these areas. Varied diet includes small mammals, small snakes, lizards, and bird and lizard eggs.
Distinguishable pointed snout longer than lower jaw. Dorsum is white with red and black rings; rings do not extend to underside which is either yellow or white. Body is smooth in texture and appears slender. Can range anywhere from 16 - 60 total inches long (40 - 152 cm). Clutches are laid from June to August and usually contain 4 to 11 eggs. Some females lay 2 clutches per year. Shakes body and vibrates tail when feeling threatened; can also discharge blood and cloacal fluids.
Learn more with Schechter Natural History's Guide to Reptiles and Amphibians