Toad-eating Snakes of the United States

What are some snakes of the United States that pretty much live off of toads in the wild? I'm aware of the Eastern Hognose, but what are the others? [emoji216]

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The only thing that really comes close are garter snakes(Thamnophis) but they eat a variety as well. Nerodia eat their fair share of frogs, wouldn't surprised me if toad was on the menu too.