All rattlesnakes found in Oklahoma produce a powerful and dangerous venom that destroys tissue and disrupts blood clotting.

Cottonmouth (Water Moccasin) Alternatively, the Water Moccasin, which is also called Cottonmouth, is a semi-aquatic venomous reptile native to the southeastern United States. The Cottonmouth is ...

The Northern cottonmouth water moccasin are the world's only semi-aquatic vipers, and typical moccasin behavior includes curling into a coil and displaying its white mouth as a deterrent and then ...