Common Snapping TurtleChelydra serpentinaWhere and when to see them

The Common Snapping Turtle is a large freshwater turtle native to much of eastern and central North America. It occurs throughout much of the Mississippi River basin, including tributaries, floodplain wetlands, and quiet backwaters. Its powerful jaws, long neck, and muscular tail make it a distinctive member of the region's aquatic wildlife. Although formidable when defending itself on land, it generally avoids people in the water. As both a predator and scavenger, it helps move nutrients through freshwater food webs.

Size

Adults typically have a shell length of 20–36 cm (8–14 in); exceptionally large individuals approach 50 cm (20 in).

Weight

Adults commonly weigh 4.5–16 kg (10–35 lb), with some individuals growing heavier.

Lifespan

Can live for several decades, often 30 years or more.

Status

Least Concern

Common Snapping Turtles spend most of their lives in water, often resting on the bottom or moving slowly through shallow areas. They may remain partly buried in mud with only their eyes and nostrils exposed. They forage by day or night, with activity varying according to temperature and local conditions. Unlike many pond turtles, they are not frequent conspicuous baskers, although they sometimes climb onto logs or banks. When approached in water, they usually retreat or remain concealed, but on land they may strike defensively if cornered. Females leave the water in late spring or early summer to dig nests and bury their eggs in soil or sand. In colder parts of the Mississippi basin, they overwinter underwater in sheltered locations and greatly reduce their activity.

• Its tail can be nearly as long as its upper shell.
• Its small lower shell prevents it from fully enclosing its body for protection.
• Nest temperature influences whether hatchlings develop as males or females.
• Females can store sperm and use it to fertilize eggs in later nesting seasons.

Wildlife opportunities depend on the river reach, water levels and species. River-specific viewing months have not been confirmed; general species seasons are not a local sighting forecast.

This species inhabits rivers, streams, lakes, ponds, marshes, and swamps. It often favors slow-moving or still water with soft bottoms, aquatic vegetation, and submerged cover. Along the Mississippi, suitable habitat includes backwater channels, oxbow lakes, sloughs, and connected floodplain wetlands. Turtles may also use larger river channels, although sheltered margins generally offer better viewing opportunities. Nesting requires accessible land, and females may travel away from water to find suitable sites.

Common Snapping Turtles are opportunistic omnivores that eat both animals and aquatic plants. Animal foods include insects, crayfish, mollusks, fish, frogs, and carrion. They sometimes take small birds or mammals when opportunities arise. Food is captured through ambush, active searching, and scavenging rather than a single specialized hunting method.

Common name

Common Snapping Turtle

Scientific name

Chelydra serpentina

Animal group

Reptiles

Size

Adults typically have a shell length of 20–36 cm (8–14 in); exceptionally large individuals approach 50 cm (20 in).

Weight

Adults commonly weigh 4.5–16 kg (10–35 lb), with some individuals growing heavier.

Lifespan

Can live for several decades, often 30 years or more.

Status

Least Concern

Identification

Look for a bulky turtle with a broad head, a long neck, and a long tail bearing a row of prominent scales. The upper shell is usually brown, olive, or nearly black, often coated with algae, and has a serrated rear edge. Its small lower shell leaves much of the limbs and underside exposed. Compared with the alligator snapping turtle, it has a less massive head and lacks that species' strongly raised, jagged shell ridges, although young Common Snapping Turtles can have noticeable ridges.