University of Nebraska
University of Nebraska: Black Rat Snake
Similar to the Fox Snake, the young Black Rat Snake kills by constriction. This site by the University of Nebraska includes description, habitat, diet, and size of the Black Rat Snake.
University of Nebraska
University of Nebraska: Great Plains Rat Snake
The nonpoisonous Great Plains Rat Snake is sometimes called the Corn Snake. The University of Nebraska presents more information including a brief description and photo.
Other
Kingsnake.com: Central American Ratsnake
With a general overview of the Central American Ratsnake, Kingsnake.com introduces five subspecies, common names, range, behavior, habitat, size, coloration, pattern, and color photo.
Other
Kingsnake.com: Baja Ratsnake
Found in Southern California, the Baja Ratsnake is profiled by Kingsnake.com. Color Photo included.