More rarely seen are western diamondbacks and cottonmouth snakes which have only been found in select areas. Ricketts said it ...

The snake also goes by other names ... the eastern cottonmouth (which inhabited the eastern U.S.) and the western cottonmouth (found in states like Alabama, Texas, and along the Gulf Coast).

Outdoor Alabama lists six venomous snakes that inhabit the state: the copperhead, cottonmouth, timber rattlesnake, pygmy rattlesnake, eastern diamondback rattlesnake and eastern coral snake.