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 a few northwestern counties along the Iowa border.

The southern leopard frog is an excellent jumper and quickly leaps into water when startled. From March through July, the males make chuckling or quacking calls from shallow water. Occurs statewide except for the northwestern corner.

The American bullfrog is Missouri’s largest frog. This common species is easy to hear on warm nights when the males call a deep, sonorous “jug-a-rum, jug-a-rum” that can be heard from half a mile away.

The Rocky Mountain toad has a number of irregular dark brown or black spots on the back and a white belly. It occurs in the Missouri River floodplain, mostly from the central to the far northwestern parts of the state.

The plains spadefoot is a stout, toadlike amphibian with large, protruding eyes, vertically oval pupils, short legs, and large feet. There is a raised area between the eyes. It occurs in counties along the Missouri River.

Prairie racerunners are fast, alert, ground-dwelling lizards. They live in open areas like fields, grasslands, and rocky, south-facing hillsides, including Ozark glades. They are related to the whiptail lizards that live in the western United States.