Coluber constrictor is a species of snake commonly known as the eastern racer or black racer. It is a non-venomous snake found in the eastern region of North America. The name "racer" is due to their incredible speed and agility, making them difficult to catch. Other synonyms for the Coluber constrictor include eastern black racer, blue racer, northern black racer, and black runner. These snakes are commonly found in wooded areas, fields, and meadows, and their diet consists mainly of small animals such as rodents, insects, and frogs. Despite their name, black racers come in a range of colors, including black, gray, brown, and blue.