Eastern Diamondback Rattlesnake: The largest venomous snake in North America, with a fatality rate of 10-20%.

Western Diamondback Rattlesnake: Responsible for the most venomous snakebite deaths in Mexico, and can grow up to seven feet long.

Timber Rattlesnake: Found in the densely populated northeastern area of the United States, with venom that can vary in toxicity by region.

Cottonmouth (Water Moccasin): More aggressive than the copperhead, with a more powerful venom, but rarely lethal to humans.

Coral Snake (Eastern and Western): Has some of the most potent neurotoxic venom in North America, but is reluctant to bite humans.

Copperhead: While not typically deadly, its venom can cause severe reactions, and it is responsible for the most snakebites in the United States.

Sidewinder: Found in the southwestern United States, with a highly toxic venom that can cause massive negative effects.