Elaphe obsoleta, commonly known as the black rat snake, is a non-venomous snake found primarily in the eastern United States. It can grow up to 8 feet long and is known for its distinctive black coloration, although some individuals may have a lighter pattern. This species is often found in forests, fields, and near water sources, where it hunts for small mammals, birds, and eggs. Black rat snakes are excellent climbers and are often seen in trees. They play a vital role in controlling rodent populations, making them beneficial to their ecosystems. Elaphe obsoleta is also popular in the pet trade due to its docile nature and striking appearance.