Masticophis flagellum, known as the Eastern Coachwhip, is a slender, fast-moving snake found in the southern United States. It thrives in open, sandy habitats like scrublands and deserts. Notable for its long, whip-like tail and smooth scales, it is a diurnal predator, feeding on lizards, birds, and small mammals.

Masticophis flagellum, commonly known as the coachwhip snake, is native to the United States and Mexico. Its geographical distribution spans the southeastern United States, extending westward to California and northward into Kansas and southern Missouri. It is also found in parts of northern Mexico.

The coachwhip snake typically inhabits arid to semi-arid regions, including deserts, grasslands, open woodlands, and scrublands. It prefers areas with loose, sandy, or rocky soil which facilitates burrowing. The climate in these regions varies from hot deserts to more temperate grasslands.

As a diurnal predator, the coachwhip snake plays a crucial role in controlling the populations of small mammals, lizards, insects, and occasionally other snakes. Its long, slender body allows it to move rapidly and efficiently through its environment, making it an adept hunter in open and often sparse vegetation.