Greek Tortoise

Is a Greek tortoise right for you?

The Greek tortoise (Testudo graeca) is one of the best-known tortoises of the Mediterranean basin, and a species that occurs naturally in parts of the Mediterranean region. It looks calm and slow-moving, but it's actually quite active, digs constantly, and tries to escape; on top of that, it can live for decades — potentially as long as a human lifetime.

Before you adopt

Legal status — read this carefully. In some countries, including Turkey, Testudo graeca is a native species that occurs naturally in the wild, particularly along the Mediterranean and Aegean coasts. This is a key difference from the Central Asian tortoise (Testudo horsfieldii, often sold as the "Russian tortoise"): that species is imported into most Western pet markets, while the Greek tortoise already lives wild in parts of its own range. Because of this, collecting from the wild, selling, or exporting native wild-caught individuals is illegal in countries where the species is protected as native fauna — check your own country's rules, since this varies. The species has also been listed on CITES Appendix II since 1975, meaning international trade requires official documentation.

Don't take home a tortoise you find in the wild. A meaningful share of the animals sold cheaply at markets, roadside stalls, or online come from illegally collected wild native populations; buying them is both potentially illegal and harmful to the species' future in the wild. If you see a tortoise crossing a road, don't take it home — move it, in the direction it was heading, to a safe spot away from traffic.

Choose a captive-bred individual. Prefer animals from a documented, legal breeder; buying one with no paperwork or unclear origin can mean supporting wildlife trafficking. If in doubt, check with your local wildlife or agriculture authority.

Size and lifespan. Adults typically reach a shell length of 18-25 cm; females are somewhat larger than males. With good care, a lifespan of 50-100 years is expected — some individuals are known to outlive a human generation.

Enclosure set-up

Outdoor pen (preferred)

• At least about 120x120 cm for a single adult; double the space for a second individual.
• Walls at least 30 cm high with an inward-overhanging top edge (tortoises attempt to climb).
• To prevent escape by digging, bury the fence or barrier about 20 cm into the ground.
• Cover the top with mesh against cats, dogs, birds, and rodents; include a shaded, sheltered hide box.

Indoors

• A minimum indoor tortoise table of about 86x60 cm with an open top for an adult; bigger is preferable. A glass aquarium traps stale air, and the tortoise will constantly scratch at the glass because it doesn't understand the barrier.
• Substrate: a soil and sand mix (or coconut fibre), at least 5 cm deep; a deeper corner helps support digging behaviour.

UVB: A strong UVB lamp (or a UVB-emitting mercury vapour bulb), on 8-12 hours a day; replace according to the manufacturer's instructions, generally every 6-12 months. Direct outdoor sunlight in summer is the best UVB source; UVB does not pass through glass.

Humidity: In keeping with the Mediterranean climate, a dry substrate is preferred; high humidity combined with low temperature carries a respiratory disease risk.

Water: A shallow, tip-proof water bowl; juveniles can be soaked briefly in lukewarm water once a week.

Feeding

The Greek tortoise is a grazer; in the wild it feeds on a wide range of broad-leaved wild plants.

Core diet: Dark leafy greens such as dandelion, plantain weed, clover leaf, endive, rocket, and curly or black kale. Pesticide-free garden herbs are ideal; don't collect from roadsides.

Frequency: Juveniles daily; adults can have extra greens a few times a week on top of daily grazing. Overfeeding leads to rapid growth and shell pyramiding.

Do not give: Fruit (upsets digestion and is high in sugar), meat, cat/dog food, bread, legumes, and high-protein foods. Iceberg lettuce has no nutritional value.

Supplements: Dust greens with calcium powder without D3; for tortoises kept mostly indoors, a D3 supplement can be added on veterinary advice. Calcium works together with UVB for shell health.

Health and lifespan

With good care, a lifespan of 50-100 years is expected; an annual vet check and faecal parasite screening are recommended.

Common problems:

• Respiratory infection: nasal discharge or bubbles, wheezing, loss of appetite, lethargy. Cold, damp conditions and stress set the stage; herpesvirus is also a cause.
• Metabolic bone disease: a soft or misshapen shell, leg deformity; caused by insufficient UVB and calcium.
• Pyramiding: shell scutes rising like towers. Linked to excess protein, overfeeding, low humidity, and dehydration; it's permanent, so prevention is easier than treatment.
• Vitamin A deficiency: from poor diet (too much lettuce, low-quality food) causing loss of appetite, swollen eyelids, ear abscesses.
• Bladder stones and urinary blockage: caused by dehydration and unbalanced diet; shows as hind-leg weakness and changes in droppings or urine; makes hibernation dangerous.
• Shell infection and mouth rot: pitting, sores, or odour on the shell; redness and cheesy deposits in the mouth.
• Loss of appetite after hibernation: a tortoise that won't eat after waking should be seen by a vet.

Hibernation (brumation) In keeping with the mild Mediterranean climate of its native range, the Greek tortoise slows down in winter; a controlled hibernation in captivity is generally recommended, but done incorrectly it can be fatal.

1. Vet check: a health and parasite check a few weeks before hibernation. Sick, weak, bladder-stone, or very young individuals should not be hibernated.
2. Fasting: food is gradually reduced before sleep and stopped entirely for the last two weeks; water and warm baths continue so the gut empties.
3. Temperature: 4-7 °C is considered the ideal range; below 3 °C risks freezing, above 10 °C burns energy and risks premature waking. A thermometer-monitored fridge used only for this purpose is the safest method.
4. Duration: generally should not exceed 8-12 weeks.
5. Weighing: weigh before and regularly during hibernation; about 1% of body weight lost per month is considered normal — if loss is clearly more, end hibernation and consult a vet.
6. Waking: warm it gradually, give a warm bath, and offer water and food. See a vet if it won't drink or hasn't eaten within a few days.

Salmonella: wash your hands after every contact and cleaning.

Handling and behaviour

1. Hold it from below, on both sides of the shell. It can panic if its legs dangle in open air.
2. Never let it fall from a height. A cracked shell is a serious injury.
3. Keep handling brief. Tortoises don't enjoy being petted; trust is built by hand-feeding.

Reading the behaviour:

• Constant digging: normal; it seeks to cool down in heat and shelter in cold. More digging in autumn can be hibernation preparation.
• Pacing along a wall without stopping: the space may be too small or the temperature wrong.
• A male chasing and ramming a female's shell: courtship behaviour, but it wears the female down; two males may fight.

History and life in the wild

Despite its name, the Greek tortoise isn't limited to Greece; it occurs naturally across a wide Mediterranean range including North Africa, Iberia, the Middle East, and Turkey's Mediterranean-Aegean coastline. It favours dry scrub, maquis, and open steppe-like habitat; it retreats to shade during the hottest summer hours and, depending on climate, slows down and burrows in winter.

Its populations are under pressure from habitat loss, wildfires, traffic, and years of illegal pet trade, which is why both CITES and national conservation frameworks aim to protect the species. Its status as a wild-occurring native species in parts of its range — unlike the imported Russian tortoise — is the single most important point to keep in mind when deciding to adopt one.