Comparison of native venomous snakes (pit vipers) and nonvenomous snakes in the United States

Reproduced with permission from: Hodge III D. Bites and Stings. In: Textbook of Pediatric Emergency Medicine, 6th edition, Fleisher GR, Ludwig S (Eds), Lippincott Williams & Wilkins, Philadelphia, 2010. Copyright © 2010 Lippincott Williams & Wilkins.