Males have fewer than 32 medium brown spots between the snout and the vent. Females have fewer than 37. Heterodon nasicus nasicus has 9-28 azygous scales. Males have more than 35 smaller brown spots between the snout and the vent. Females have more than 40.
Ventral color is dark black and marked with white or pale yellow blotches.
This snake is not commonly seen, but inhabits a wide variety of areas, including sandy shortgrass prairies, rocky arid lands, and coastal islands. In North America, Western Hognose Snakes are found in a band from southern Alberta through the Central Plains states into central Mexico. In Texas, they are found throughout much of the state. This project funded by the University of Texas College of Natural Sciences and the Texas Memorial Museum . Comments welcome .