The eastern hog-nosed snake (Heterodon platirhinos), also known as the spreading adder and by various other common names, is a species of mildly venomous rear-fanged snake in the family Colubridae. The species is endemic to North America. There are no subspecies that are recognized as being valid.
Eastern hognose snake

Sturgis McKeever, Georgia Southern University, Bugwood.org