Field Guide

Graham's crawfish snake is a medium-sized, dull-colored, semiaquatic snake known from prairie streams, marshes, and ponds. Like most other snakes associated with water, it is often misidentified as a cottonmouth and needlessly killed.

The Mississippi green watersnake is a medium-sized, heavy-bodied, dark-colored semiaquatic snake that was once somewhat common in southeastern Missouri. It probably no longer occurs in our state at all.

The red-eared slider is an attractive aquatic turtle with yellow pinstripes and red ears. It is commonly seen basking on logs or rocks and occurs statewide, except for a few northern counties.

A glacial relict in Missouri’s eastern Ozarks, the four-toed salamander lives among mosses in heavily forested streams and creeks and sinkhole ponds. It has a thick, round tail that is constricted at its base. There are four toes on each limb.

The cottonmouth is named for the cotton-white lining of its mouth, which it opens widely when alarmed. This dangerously venomous, semiaquatic snake occurs in the southeastern corner of Missouri, with a spotty distribution in the Ozark Region.

The northern watersnake is gray to reddish brown with dark brown crossbands. The belly is cream-colored with black and reddish half-moon markings. This is Missouri’s most common watersnake.

The plain-bellied watersnake is a medium-sized, heavy-bodied, dark-colored, semiaquatic snake with a plain yellow belly. It is found throughout southeastern Missouri and north along the Mississippi River floodplain.

Mudpuppies are aquatic salamanders that have plumelike external gills throughout their entire lives. They’re found in the southern half and along the eastern edge of Missouri.

The eastern musk turtle is one of the world’s smallest turtles. It has a dark, domed upper shell and reduced lower shell. It occurs along our Mississippi River counties and in the southern two-thirds of the state.

The eastern river cooter is a broad-shelled aquatic turtle with a seemingly small head. It is most abundant in the rivers and sloughs of southern Missouri but also occurs in some of our large reservoirs.