The Hognose Snake is a type of colubrid snake characterized by an upturned snout that are are notorious for playing dead when threatened. Hognose snakes consist of three distantly related genera that are artificially grouped together by the "hognose" common name: Heterodon which are predominantly found in United States and northern Mexico. Leioheterodon the Madagascar hognose snakes, and Lystrophis the South American or tri-colored hognose snakes.
Heterodon are rear-fanged and technically not venomous, but the saliva they excrete is considered toxic to prey but not considered to be dangerous to humans.
For most Hognose snakes the bulk of their diet is made up by rodents, and lizards. H. platirhinos is an exception, and specializes in feeding on toads, though they can be trained to take appropriately sized rodents.