The cliff chirping frog (Eleutherodactylus marnockii) is a small leptodactylid frog found in the United States, in central and western Texas. Cliff frogs are 0.75 to 1.5 inches in length, and are an olive green or tan in coloration with brown or black mottling, often with banding on the rear legs. They have somewhat flattened bodies which allow th...