10. Eastern Diamondback Rattlesnake

A native to the southeastern United States, the Eastern Diamondback Rattlesnake is considered the most deadly of the rattlesnake species, as well as the largest. While the LD50 can be lower than other deadly species at 14.6 mg/kg at the weakest, it delivers a high dosage of venom, usually about 400-450 mg. Despite its species, eastern diamondbacks do not always rattle, and some will strike silently.

Venomous snakes Faabi / Getty Images

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