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ReptileFreshwaterSemi-aquaticIntermediate
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Common snapping turtle
Chelydra serpentina
The common snapping turtle is a robust freshwater predator from North America. It requires a large aquatic setup with muddy bottoms and submerged cover for ambush hunting.
Class:Testudines
Order:Testudines
Family:Chelydridae
Genus:Chelydra
Species:Chelydra serpentina
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Water Temperature
10 - 28 °C
pH Value
6.8 - 7.5
Environment
Freshwater / Semi-aquatic
Humidity
60 - 80 %
Day temperature
10 - 28 °C
Ambient temperature
10 - 28 °C
Night temperature
18.5 - 20.5 °C
Basking spot
30 °C
Adult size
50 cm
Minimum enclosure
>= 400 L
Brumation temperature
4 - 8 °C
UVB
Medium
Species description
Geographical Origin and Habitat: The common snapping turtle (Chelydra serpentina) is native to a broad range of North America, stretching from southern Canada, throughout the eastern and central United States, down to Florida and eastern Texas. It inhabits shallow, slow-moving freshwater ecosystems with soft muddy or sandy bottoms, such as marshes, ponds, lakes, creeks, and slow rivers. It prefers areas abundant in submerged vegetation and fallen logs, which provide cover for ambush hunting.
Taxonomy and Genetics: Belongs to the family Chelydridae, an ancient lineage of turtles. Previously, several subspecies in Central and South America were classified under this species, but modern molecular studies have elevated them to full species status (e.g., Chelydra acutirostris and Chelydra rossignonii). Chelydra serpentina is currently considered a monotypic species with high genetic resilience and cold tolerance.
Behavior and Habits: Primarily aquatic, spending most of its time resting on the muddy bottom or floating near the surface. It is a highly opportunistic predator. While docile and prone to fleeing underwater, it becomes aggressive and highly defensive on land, striking rapidly with its powerful jaws. In northern parts of its range, it undergoes winter hibernation underwater, buried in the mud from November to March.
Morphology: A large turtle, with adult carapace lengths reaching up to 45 cm and weights typically between 5 and 16 kg. The carapace is dark brown to black, rough, and features three longitudinal ridges that tend to wear down and flatten in older individuals. The head is large with sharp, beak-like jaws, the neck is long and covered in warty tubercles, and the tail is long and crested with large scales.
Care, breeding and tankmates
Terrarium Setup: Due to their adult size and strength, they require a very large indoor stock tank or custom enclosure of at least 800-1000 liters, or a secure outdoor pond. The water depth should allow the turtle to reach the surface to breathe while resting on the bottom. Use a fine sand substrate and install a massive canister filtration system to handle the high bioload.
Lighting and Heating: Keep water temperature between 22 °C and 26 °C. Although snapping turtles rarely bask, a dry land area must be provided, heated to 30-32 °C with a basking spotlight, and equipped with a 10.0% UVB lamp to support bone development and prevent shell deformities.
Humidity and Hydration: As an aquatic species, proper water management is critical. Perform 30-50% weekly water changes to maintain low ammonia and nitrate levels. Keep pH neutral (6.8-7.5). Poor water quality rapidly leads to eye swelling and skin lesions. Enclosure humidity is not a primary concern if water is clean.
Feeding and Supplementation: Highly omnivorous. The diet should consist of whole freshwater fish, earthworms, crickets, crayfish, occasional rodents, leafy greens, duckweed, and commercial turtle pellets. Supplement with calcium powder twice a week for juveniles. Use long metal feeding tongs to avoid accidental bites.
Compatibility: Must be housed strictly individually. Snapping turtles are solitary, highly territorial predators that will attack, dismember, or consume any tankmates, including other turtles and conspecifics. Co-habitation is extremely dangerous and not viable.
Health and Common Diseases: Susceptible to shell rot (ulcerative shell disease) and skin infections from dirty water, and Metabolic Bone Disease (MBD) from poor UVB lighting. Handling should be avoided unless necessary, in which case the turtle must be picked up firmly from the rear of the carapace, keeping hands clear of the long neck's reach.
Geographic Origin and Distribution
The common snapping turtle (Chelydra serpentina) is native to a broad range of North America, stretching from southern Canada, throughout the eastern and central United States, down to Florida and eastern Texas. It inhabits shallow, slow-moving freshwater ecosystems with soft muddy or sandy bottoms, such as marshes, ponds, lakes, creeks, and slow rivers. It prefers areas abundant in submerged vegetation and fallen logs, which provide cover for ambush hunting.
Origin
North America
Reptile profile
- Diet
- No verified data available
- Life expectancy
- No verified data available
- Adult size
- 50 cm
- Lifestyle/Microhabitat
- No verified data available
- Activity cycle
- No verified data available
- Sociality
- No verified data available
- Reproduction
- No verified data available
- Handling tolerance
- No verified data available
- Brumation
- No verified data available
- Molting
- No verified data available
The catalog's scalar value is 50 cm. The ReptTraits v1.2 source reports a maximum adult measurement of 50 cm for this species, recorded as straight carapace length (SCL). These figures are not interchangeable: the first is the profile's editorial reference, whereas the second is a published maximum under a specific measurement convention; differences among sources can reflect sex, population, life stage and measuring method.
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
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