Field Guide

The green frog looks similar to a bullfrog but is smaller and has a ridge of skin along the sides of the back that is not found on bullfrogs. It is a game animal in Missouri.

The northern leopard frog is a medium-sized frog with dark spots on the back. Two skin folds run down each side of the back. In Missouri, it only occurs in our northwestern counties.

A medium-sized spotted frog, the plains leopard frog is found in pastures, prairies, and marshes. The ridge of skin along each side of the back is broken, and a small hind section of it is shifted upward. It is not present in the Ozarks.

The pickerel frog is medium-sized, with square or rectangular spots in two parallel rows down the back. There is a distinct ridge of skin along each side of the back. It is absent from the northwestern third of Missouri.

A very secretive species, the northern crawfish frog spends most of its time hidden burrows, typically those made by crayfish. It is restricted to native prairie or former prairie areas and is a species of conservation concern in Missouri.

The voices of spring peepers are a true announcement that winter is ending. These small, slender frogs can be several overall colors, but seeing an X on the back is a good way to ensure your identification.

The western narrow-mouthed toad has a plump body, small pointed head, and a fold of skin behind the eyes. It is typically uniform in color, ranging from tan to gray or olive green, and it has a white belly. In our state is is reported from far western Missouri and east along the Missouri River as far as the center of the state.

The eastern narrow-mouthed toad is a plump little amphibian that is seldom seen. There is a fold of skin behind its narrow, pointed head. It occurs in the southern half of the state.

Unlike other true toads in Missouri, the Great Plains toad has a raised hump (called a “boss”) between the eyes on the snout. Look for it along the Missouri River floodplain, from the Iowa border to about Hermann.

The bright green treefrog hides perfectly among cattail leaves, where it rests until evening. Then it begins hunting for insects. In Missouri, it occurs mostly in the Bootheel.