← Marginated Tortoise care guide
Marginated Tortoise Enclosure and Habitat
Marginated tortoises are the largest European tortoise and the largest Testudo, reaching up to about five kilograms. Enclosure guidance shared across the Mediterranean species generally understates what they need.
What published sources give
| Figure | Size | Notes |
|---|---|---|
| Housing | Outdoor preferred; large indoor floor space otherwise | From this site's care guide |
| Adult size | 25-40 cm and up to ~5 kg | Larger than a Hermann's or Greek |
| General rule | 2-4 sq ft per inch of shell | Which scales up for this species |
Checked September 20, 2026. Where sources differ the range is shown rather than averaged. These are the figures published as minimums; none of them is a maximum.
What changes as they grow
Hatchling and juvenile
Humid hide and damp substrate, as for other Testudo. They start small enough that the eventual size surprises people.
Adult
Plan for the largest European tortoise. Enclosure guidance copied from Hermann's care sheets will be too small, sometimes substantially.
Enclosure mistakes specific to this species
A boundary that is not sunk into the ground
Tortoises dig. A fence that starts at ground level is an invitation, and the animal has all day. Sinking the barrier is standard advice for outdoor pens.
Using Hermann's tortoise enclosure figures
The Mediterranean tortoises get treated as one group, and marginated tortoises are considerably bigger. Grazing area and pen size both need scaling up.
Brumating without a controlled space
They brumate naturally for two to four months. That requires a planned setup rather than an enclosure that happens to get cold.
UVB mounted outside glass, or left in past its life
Glass filters UVB out, and bulbs lose output within 6 to 12 months while still looking lit. In shelled species this shows up as soft shell and metabolic bone disease, which is slow to appear and hard to reverse.
Enclosure hazards that apply to almost every setup
Five hazards come up across nearly every species on this site: contact burns from unguarded heat, UVB that never reaches the animal, cutting ventilation to hold humidity, unsecured decor, and trusting a bulb's wattage instead of a thermometer. They are set out in full, with sources, on our enclosure hazards page, which is worth reading once against any setup including one that looks finished.
Signs the enclosure is wrong
Animals tell you about their housing through behaviour before they tell you through illness. None of these is a diagnosis; each is a reason to look at the enclosure and, where noted, to call a vet.
| What you see | What it can mean |
|---|---|
| Boundary digging | They are strong, and stronger than the smaller Testudo. |
| Pyramided scute growth | Diet, humidity and UVB together. |
| Refusing food as temperatures fall | Normal pre-brumation behaviour in this species. |
| Soft shell or rubbery limbs | Metabolic bone disease. Veterinary attention. |
Common questions
How big should a marginated tortoise enclosure be?
Larger than for a Hermann's or Greek tortoise, because this is the largest European tortoise at up to about 40 centimetres and five kilograms. Outdoor housing is preferred, with a large indoor floor area otherwise.
Is a marginated tortoise enclosure the same as a Hermann's?
No, and this is a common error because the species are often covered together. Marginated tortoises are substantially larger, so pen and grazing area both need to scale accordingly.
Do marginated tortoises brumate?
Yes, typically for two to four months. That needs a controlled, safe space at an appropriate temperature rather than simply an enclosure that gets cold in winter.