While the vast majority of Texas' snakes are completely harmless, about 15% are venomous, including rattlesnakes, ...

Most fatal snake bites are the fault of a rattlesnake ... with a triangular-shaped head and heavy body. They’re brown and gray, with dark diamond patterns along their entire body.

Venomous cottonmouth snake Rattlesnakes come in various forms. The most common throughout the state is the western diamondback rattlesnake, which has a brown body with dark brown, diamond-shaped ...