Technically, yes, the Southeastern Crowned Snake is venomous. Venomous snakes can be divided into two broad categories, front-fanged and rear-fanged. The crowned snakes are in the latter group. Most familiar venomous snakes - the pit vipers and coral snakes, for example - are front-fanged. Their venom is potent and their fang position enables venom delivery during a strike or quick bite. They use their venom for self defense and to kill prey. Rear-fanged snakes' fangs are at the rear of the upper jaw and are different from the hollow fangs of front-fanged snakes; the venom runs down a groove at the back of the tooth. Their venom is usually weaker and is used to begin the digestion process as the prey is being swallowed. Most North American rear-fanged snakes are small, secretive, and unfamiliar to most people, but surprisingly, even garter snakes are rear-fanged and some people react quite strongly to their bites. The venom of rear-fanged snakes has not been studied well, but recent research has shown it to be much more potent in some cases than was believed. Still, you'd have to work pretty hard to be affected seriously by the bite of any North American rear-fanged snake.