The Smooth Green Snake, also known as Opheodrys vernalis, is a small, slender, non-venomous snake with a bright green coloration that aids in camouflage among grasses. It inhabits moist meadows, marshes, and forest edges in North America. This species feeds primarily on insects and spiders.

Opheodrys vernalis, commonly known as the Smooth Green Snake, is native to North America. Its geographical distribution includes parts of the United States and Canada. In the United States, it is found in the northeastern, north-central, and midwestern regions, including states like Minnesota, Wisconsin, Michigan, New York, and Pennsylvania. In Canada, it is found in southern Ontario and Quebec.

The Smooth Green Snake typically inhabits open, moist environments such as meadows, grasslands, marshes, and the edges of forests. It prefers areas with dense vegetation that provide cover and foraging opportunities.

Opheodrys vernalis occupies a niche as an insectivore, primarily feeding on insects and other invertebrates. Its green coloration provides excellent camouflage in its grassy habitats, aiding in both predation and avoiding predators. The species' preference for moist environments helps maintain its hydration and supports the availability of its prey.