The Texas indigo snake, Drymarchon melanurus erebennus, is a robust, non-venomous snake native to the southern United States and northeastern Mexico. It features glossy black scales and can grow up to 8 feet long. It inhabits grasslands and woodlands, playing a crucial role in controlling rodent and venomous snake populations.

Drymarchon melanurus erebennus, commonly known as the Texas indigo snake, is native to the southern United States and northeastern Mexico. Its geographical distribution includes southern Texas in the United States and extends into northeastern Mexico, particularly in the states of Tamaulipas and Nuevo León.

The Texas indigo snake inhabits semi-arid environments, including thornscrub, mesquite savannas, and open woodlands. The region experiences a subtropical climate with hot summers and mild winters, and the snake often resides near water sources like streams and rivers.

As a top predator in its ecosystem, the Texas indigo snake plays a crucial role in controlling the populations of various smaller animals, including rodents and other reptiles. It is known for its ability to consume rattlesnakes and other venomous snakes, displaying immunity to their venom. The snake's adaptability allows it to thrive in various semi-arid habitats, often seeking shelter in burrows or under debris.