Photo by Matthew Inabinett, CC BY · source · credits
Variations
1 kinds · tap one for a closer look
Eastern mud turtle
Bottom walker.
This one is best kept on its own, or with its own kind.
- Eastern mud turtle should be kept without other species, and it needs a land area too.
- Eastern mud turtle should be kept without other species, and it needs a land area too.
- Eastern mud turtle should be kept without other species, and it needs a land area too.
Care and water
Behavior
Bottom walker.
Check your local laws. US: live turtles under 4 in (10 cm) carapace length and viable eggs may not be sold or distributed commercially (FDA, 21 CFR 1240.62; exceptions for science/education/exhibition, non-business transfers and export). CITES: all mud turtles (Kinosternon spp., except two species already in Appendix I) are in Appendix II since 23 Feb 2023, so international trade needs CITES permits. Check the rules where you live before you buy one, and never release it into the wild.
Food
Pellets, insects, snails.
Tap a food to see what it is.
Male or female
Males have a much longer, thicker tail ending in a sharp nail, with the vent beyond the shell edge; females have a short tail with the vent near its base. Both sexes have a small spine at the tail tip.
Health
Common problems. Tap one to see the signs. This is a guide, not a diagnosis.
Breeding
Egg-layer (substrate spawner) · Moderate
Lays small brittle-shelled eggs on land, in or under debris or in burrows; females may nest two or three times a year.
Buy a pair of adults.
A shallow tank with a nesting area.
A cool winter then warm spring.
2-5 eggs per clutch; hatch in about 87-104 days.
Hatchlings eat insects and pellets.
- Deep water
- No nest site
- Dirty water
Where it lives in the wild
The story of the eastern mud turtle
A small, mostly aquatic turtle that prefers shallow, slow-moving water.
Bonnaterre described the eastern mud turtle in 1789, making it one of the earlier North American turtles named in science. It is a small, secretive turtle that often wanders on land between wetlands. In the hobby it is kept as a compact, low-maintenance alternative to larger sliders.
First described by Pierre J. Bonnaterre in 1789.
- Its lower shell has two hinges, letting it partly close up when threatened.
- It often buries itself in mud or soil during dry or cold periods.
- Adults are small, usually around 8–12 cm in shell length.
Sources
11 facts checked with sources
- Scientific name
Reptile (aquatic turtle), not a fish. The former subspecies K. s. hippocrepis (Mississippi mud turtle) is now treated as a separate species, Kinosternon hippocrepis, so animals from the Mississippi valley/Gulf states sold as 'mud turtles' may be that species. Florida mud turtle (steindachneri) is a further form. Needs land/basking access.
Illinois Natural History Survey (University of Illinois): Eastern Mud Turtle · The Reptile Database: Kinosternon subrubrum - Familycorrected
New value (legacy had none).
The Reptile Database: Kinosternon subrubrum - Size
Carapace length (CL). Typical adults under about 9.5-10 cm, maximum about 12.5 cm; legacy 11 cm is a large adult.
Illinois Natural History Survey (University of Illinois): Eastern Mud Turtle · Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum) · Pennsylvania Natural Heritage Program fact sheet: Eastern Mud Turtle (government) - Lifespan
Gibbons (1983, 1987), cited by VHS. Wild lifespan over 30 years supports the legacy lower bound; no source checked gives the 50-year upper figure.
Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum) - Swimming level
Bottom walker that rarely basks; also spends long periods on land (VHS: often seen on land, overwinters in shallow burrows).
Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum) - Where it livescorrected
New value (legacy had none). Possibly introduced in central Italy (Reptile Database).
Pennsylvania Natural Heritage Program fact sheet: Eastern Mud Turtle (government) · The Reptile Database: Kinosternon subrubrum - Male or female
Males also have rough scale patches behind the knee (INHS).
Pennsylvania Natural Heritage Program fact sheet: Eastern Mud Turtle (government) · Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum) - Breeding
Hatchlings may stay buried in the nest until the next spring (SREL).
Illinois Natural History Survey (University of Illinois): Eastern Mud Turtle · Savannah River Ecology Lab (University of Georgia): Eastern Mud Turtle - Eggs and young
Laboratory incubation 87-104 days, slightly longer than legacy 80-100; close enough to count as verified.
Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum) - StoryPennsylvania Natural Heritage Program fact sheet: Eastern Mud Turtle (government) · Virginia Herpetological Society: Eastern Mud Turtle (Kinosternon subrubrum subrubrum)
- traits.legalcorrected
Added after batch 10.
eCFR 21 CFR 1240.62 Turtles intrastate and interstate requirements · USFWS press release: Critical progress at CITES CoP19 (Nov 2022) · USFWS: Ancient reptiles need modern regulations