A Tiger Rattlesnake blending in with its surrounding rocks near Tucson, Arizona

The Tiger Rattlesnake, ''Crotalus tigris'', is a highly venomous pit viper species found in the southwestern United States and northwestern Mexico. No subspecies are currently recognized. The specific name ''tigris'', Latin for "tiger", refers to the many narrow dorsal crossbands, which create a pattern of vertical stripes when viewed from the side.