Pantherophis emoryi

Pantherophis emoryi, commonly known as the Great Plains rat snake, is a species of nonvenomous rat snake in the family Colubridae. The species is native to the central part of the United States, from Missouri to Nebraska, to Colorado, south to Texas, and into northern Mexico.

Etymology

The epithet, emoryi, is in honor of Brigadier General William Hemsley Emory, who was chief surveyor of the U.S. Boundary Survey team of 1852 and collected specimens for the Smithsonian Institution. As such, it is sometimes referred to as Emory's rat snake.

Common names

Additional common names for Pantherophis emoryi include the following: brown rat snake, chicken snake, eastern spotted snake, Emory's Coluber, Emory's pilot snake, Emory's racer, Emory's snake, gray rat snake, mouse snake, prairie rat snake, spotted mouse snake, Texas rat snake, and western pilot snake.

Description

The Great Plains rat snake is typically light gray or tan in color, with dark gray, brown, or green-gray blotching down its back, and stripes on either side of the head which meet to form a point between the eyes. It is capable of growing to 3–5 feet (0.91–1.52 m) in total length (including tail).

Habitat and behavior

The Great Plains rat snake prefers open grassland or lightly forested habitats, but is also found on coastal plains, semi-arid regions, as well as rocky, moderately mountainous regions. It can often be found on farmland, which often leads to its being erroneously called a chicken snake, and other areas with a relatively high rodent population, which is its primary diet. It will also eat birds, and occasionally snakes, lizards and frogs, all of which it subdues by constriction.