The Western Hemisphere is not only the origin of corn, potatoes, and tomatoes, but also squash and pumpkins. Carrots, probably purple at first, were from Afghanistan. Beans are thought to have been found in both the Western Hemisphere and the Mid-East. Onions have been cultivated in Asia for thousands of years.
The ring neck snake is mildly venomous, but don't worry, it uses the venom to kill frogs, worms, pill bugs, and lizards. The venom though is to mild and delivered in too low a dose to harm a human. Ringneck snakes secrete a foul smelling odor when frightened.
With the exception of the Coral Snake (see pix), all poisonous snakes in the USA are pit vipers. This means the Copperhead, the Cottonmouth, and many species of rattlesnakes. These snakes are really fat, with big, fat heads. They have slits for pupils. The rattlesnakes have rattles on the end of their tails.