Eastern Box Turtle

Overview

The eastern box turtle is a subspecies of the common box turtle. It has a high-domed, dark brown shell with yellow-orange markings and four toes on each hind foot ¹. A hinged lower shell lets it close up almost completely when threatened ¹. Adults are about 4 by 6 inches, and box turtles in general are about 5 to 7 inches ¹². Box turtles are often said to live 25 to 35 years or more, and some reach 100 ¹⁵. VCA notes that captives usually live up to 20 years, sometimes 30 to 40 ². They're inquisitive and can become quite personable. Some take food from the hand or follow their owners ⁵.

Natural history

Eastern box turtles range from Maine to Florida and west to the Great Lakes and Texas ¹. They live in shrubby grassland, marshy meadows, open woods and forest edges, often near streams or after rain ¹. They're opportunistic omnivores that eat plants, mushrooms, fruit, insects, small amphibians, eggs and carrion. Young turtles eat more animal food ¹. In summer they're active early or after rain. In the north they brumate from about October to April ¹. They usually keep a home range of about 750 feet or less across, and a homing instinct helps them find their way back ¹.

Enclosure

• Indoors. A 20-gallon tank works at first, but adults need a 60- to 100-gallon tank or a dedicated floor pen ³. Chicago Exotics uses 4 × 4 ft tables for a pair. Turtles in glass tanks often try to "walk through" the glass ⁵.
• Outdoors. A predator-proof, dig-proof pen with a small pond and a shelter works where climate allows ⁵.
• Hides. Two, warm and cool, plus a humid hide with damp sphagnum moss ⁵⁶.
• Dig box. Slightly moist plain topsoil, changed weekly ⁵.
• Water. A shallow dish with a ramp, big enough to soak in and shallow enough to be safe. Clean it daily, because they often defecate in it ³⁵.
• Furnishings. Secure branches, rocks and plants for enrichment ³.

Temperature & lighting

Create a gradient so the turtle can warm or cool itself ³. Keep heat cables or tape outside the enclosure and on a thermostat ⁵. UVB is required for calcium metabolism. Use a reptile UVB tube or mercury vapor bulb per the manufacturer, about 12 hours a day, replaced every 6 to 12 months ⁵⁶. No colored lights at night ⁵.

Humidity

Keep humidity at about 40 to 50%, with the dig box providing a humid retreat around 70% ⁵. Soak in shallow lukewarm water 2 to 3 times a week if the turtle doesn't soak itself. Always check depth and temperature ⁵.

Substrate

Use newspaper, paper towel, paper pellets, alfalfa pellets, or reptile or indoor-outdoor carpet, with hay on top for foraging ³⁵. Avoid sand, gravel, wood shavings, corncob, walnut shell and cat litter, which can cause impaction. Never use cedar, which is toxic ³. Damp plant bedding molds in 2 to 3 days ³.

Diet & supplementation

Box turtles are omnivores ²⁶.

• Animal food. Earthworms, mealworms, soldier fly larvae, hornworms, crickets, slugs and snails ⁶. Chicago Exotics suggests about half the diet from animal protein ⁵.
• Plants. Dark leafy greens, dandelion, squash, carrot, pumpkin, bell pepper, edible mushrooms and some berries or apple ⁵⁶. They're drawn to red, orange and yellow foods ⁵.
• Avoid iceberg lettuce, all-meat diets, and dog or cat food. Too much protein harms the kidneys ⁴⁵.
• Frequency. Juveniles daily, adults every other day ⁵.
• Supplements. Indoors, calcium and a multivitamin with true vitamin A about twice a week ⁵⁶.

Handling & temperament

Box turtles are docile and sometimes shy ⁵. Turtles commonly carry Salmonella without looking sick. Wash your hands thoroughly after handling, feeding or cleaning, and supervise children ².

Health

Common issues ⁴

• Vitamin A deficiency. Swollen eyelids, ear abscesses, respiratory infections and kidney failure, usually from poor diet.
• Respiratory infections. Bubbles from the nose or mouth, wheezing, neck stretching and open-mouth breathing.
• Metabolic bone disease. A misshapen shell or deformed legs.
• Abscesses, shell infections, shell fractures and parasites.

When to see a vet

See your vet for swollen eyes or ears, nasal discharge, open-mouth breathing, lethargy, poor appetite or shell changes ⁴. Abnormal beaks from malnutrition may never fully recover, so act early ⁵.

Breeding overview

Box turtles mature at about 5 years ¹². Males have shorter, thicker tails and short, curved hind claws ¹. Females can store sperm for years and usually lay about 4 or 5 eggs from May to June ¹.

Legal & ethics

Terrapene carolina is listed on CITES Appendix II ⁷. Many US states protect wild box turtles from collection. Released pets can spread disease to wild populations ¹. Buy domestically bred turtles only ⁵. Federal rules ban selling turtles under 4 inches except for bona fide scientific, educational or exhibition purposes other than as pets ⁸. The ban dates from 1975 and is aimed at turtle-related Salmonella ⁹.

Sources

1. Eastern box turtle · Smithsonian's National Zoo and Conservation Biology Institute
2. Owning Box Turtles · VCA Animal Hospitals
3. Housing Box Turtles · VCA Animal Hospitals
4. Common Diseases of Box Turtles · VCA Animal Hospitals
5. Box Turtle Care · Chicago Exotics Animal Hospital
6. North American Box Turtle Care · Tree of Life Exotic Pet Medical Center
7. CITES listing: Terrapene carolina · Species+ (UNEP-WCMC and CITES Secretariat)
8. 21 CFR 1240.62: Turtles intrastate and interstate requirements · Electronic Code of Federal Regulations
9. Salmonella and Turtle Safety · U.S. Food and Drug Administration

Last reviewed 2026-10-24 by Novel Fauna. This guide is general husbandry information, not veterinary advice. When an animal is sick, see a veterinarian experienced with exotic animals.

Revision history

1. 2026-10-24 Library: fix source frontmatter, hognose difficulty, fallback guide links, hero copy a22966a
2. 2026-10-24 Library: 50 cited care guides, /library/[slug] route, coming-soon cards, SLUGS.txt synced to species.guide_slug 228ce54

Evidence grades: Novel Fauna editorial: source classification, not yet expert-reviewed, 2026-10-25. What the grades mean.

Report an issue