White-Lipped Tree Viper (Cryptelytrops albolabris) Envenomation in an American Viper Keeper.

Background: Snakebites are common in many regions of the United States. Bites from exotic species, however, are rare. The white-lipped tree viper, Cryptelytrops (formerly Trimeresurus) albolabris, is a pit viper native to Southeast Asia.