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What do black rat snakes look like?

An adult black rat snake has a glossy black back and a white underside. Some adults may appear brownish or have black blotches on the back. The white belly may have black checkered marks at the front and gray, brown, or yellow blotches toward the back. Its lips and chin are white. Juveniles are recognizable by their dark facial bands and a gray or tan body marked with black or brown blotches.