Northern Leopard Frog (Lithobates pipiens)
Description: 2 - 3½ inches. Northern Leopard Frogs may be green, tan, or brown in color, with large dark spots. The belly is white and there is a ridge that starts behind each eye, and runs down the length of the body (dorsolateral folds). There is a light colored line on the upper lip.
Similar Species: Southern Leopard Frogs usually have a light spot on the ear drum, and less spots on the side of the body. Plains Leopard Frogs do not usually have any green coloring, and the dorsolateral folds are broken and inset near the legs. Crawfish Frogs have a marble patterned lip rather than having a light line on it.