
Source: Wikimedia Commons
Kinosternon flavescens
A small mud turtle named for the yellow on its throat, head and neck. It has a flat carapace and a double-hinged plastron, spends much of the year estivating underground and can live over 40 years.
The yellow mud turtle is a kinosternid of the central and south-western United States (Arizona, Colorado, Illinois, Iowa, Kansas, Missouri, Nebraska, New Mexico, Oklahoma and Texas) and north-eastern Mexico. Isolated populations in Iowa, Illinois and Missouri are thought to be relicts of a formerly more eastern range. Maximum carapace length is 16.8 cm; males are larger, and females reach 12.8 cm. The flat, keelless carapace is broadly oval from above and yellow to brown with darker seams. Yellow on the throat, head and sides of the neck gives rise to its common and scientific names. The plastron has two hinges so each end can close separately, and males have a blunt spine at the tail tip. Four subspecies were once recognized, but the Arizona and Durango forms are now widely treated as separate species and no subspecies are recognized. It spends most of the year estivating underground and becomes active when rain refills ponds; in dry years it may stay buried for up to 24 months. Unusually for a turtle, the female stays with her eggs for a period after laying. In Japan small numbers are sold by specialist shops.
Source: Wikipedia (CC BY-SA 4.0)
The Yellow Mud Turtle lives More than 40 years.
The Yellow Mud Turtle grows to Maximum carapace length 16.8 cm (males larger; females up to 12.8 cm).
Origin
Central to south-western United States and north-eastern Mexico
Lifespan
More than 40 years
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Kinosternon flavescens (Agassiz, 1857)
Synonyms: Cinosternon flavescens Agassiz, 1857, Cinosternum flavescens Cope, 1875, Platythyra flavescens Agassiz, 1857
Authority databases: GBIF · The Reptile Database: Kinosternon flavescens · GBIF: Kinosternon flavescens
Nomenclature follows global taxonomic authority databases.
Listed in CITES Appendix II. International trade requires an export permit from the country of origin, but no registration is needed to keep or transfer the animal within Japan. The whole genus Kinosternon has been listed since 23 February 2023.
Sources: Species+ (CITES): Kinosternon flavescens
Regulations may change. Always verify the latest information with the relevant authorities.
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Size
Maximum carapace length 16.8 cm (males larger; females up to 12.8 cm)
Temperature
25〜32℃
Humidity
40〜70%
Omnivore (worms, crayfish, frogs, snails, fish, aquatic insects, plants)
It forages on land and in water and burrows to rest, so provide shallow water plus a land area with soft, diggable substrate.
An omnivore eating worms, crayfish, frogs, snails, fish, fairy shrimp, leeches, aquatic insects, plants and carrion; combine pellets with animal foods.
In the wild it estivates underground for most of the year and is active in the rainy season, so its activity varies strongly by season.
Females have been seen staying with their nests from a few hours up to 38 days after laying.
It can live more than 40 years, so plan long term.
Former subspecies such as the Arizona mud turtle are now widely treated as separate species; check the scientific name and origin. Never release a captive animal into the wild.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The average lifespan of Yellow Mud Turtle is More than 40 years. With proper care and nutrition, they can live a long and healthy life.
Yellow Mud Turtle typically reaches Maximum carapace length 16.8 cm (males larger; females up to 12.8 cm) as an adult. Size may vary depending on care conditions and individual genetics.
Yellow Mud Turtle feeds on: Omnivore (worms, crayfish, frogs, snails, fish, aquatic insects, plants). Aim for a balanced diet with appropriate feeding frequency.
The price of Yellow Mud Turtle varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 23, 2026