Scientific Taxonomy
Scientific Name: Testudo horsfieldi
Male Russian tortoises average around 5.5 inches in carapace length and weigh approximately 1.3 pounds. Females are generally larger, averaging around 7.5 inches and approximately 3 pounds.
Russian tortoises naturally inhabit dry, arid regions around the Mediterranean and parts of Turkey, Afghanistan, Russia, Iran, China, and Pakistan. They spend up to nine months each year living in burrows and are the only land tortoise (Testudo species) without a hinge on the rear portion of the plastron. They are also unique in having only four claws or toes on each foot.
Temperature and Humidity
Russian tortoises should be maintained at temperatures between 70–80°F, with a basking area of approximately 90°F.
When housing tortoises indoors, thermometers should be placed in multiple locations throughout the enclosure to monitor environmental temperatures.
Humidity should remain between 30–50% to provide a dry environment. A hygrometer should be used to monitor humidity levels.
Lighting
Natural sunlight that is not filtered through windows is the preferred light source for Russian tortoises and other reptiles.
When indoor housing is necessary due to weather or illness, use a broad-spectrum heat bulb.
The Exo Terra Solar Glo is recommended because it provides heat, UVB, and UVA lighting.
UV light provides multiple benefits including:
- Proper calcium metabolism
- Improved appetite
- Increased activity
- Protection against metabolic bone disease
Always follow the manufacturer’s installation instructions.
Use a ceramic clamp fixture to prevent melting and securely mount the fixture to reduce the risk of accidents.
Replace the bulb annually, and remember that glass and plastic block UV light.
If necessary, a red bulb may be used for nighttime temperature drops.
Growth and Reproduction
Average reproductive age is 7–11 years.
Russian tortoises generally reach maximum size between 20–30 years of age.
Gender Identification
Females are larger than males of the same age.
Female characteristics include:
- Short, blunt tail
- Flat plastron
Male characteristics include:
- Longer pointed tail
- Hard bony prominence at the tip of the tail used during mating
- Curved plastron
- Larger serrations on the scutes near the tail
Husbandry
Russian tortoises naturally dig extensive burrows or occupy abandoned rodent dens to escape extreme temperatures.
Indoor Enclosure
Recommended enclosure:
- Plexiglass aquarium
Suitable bedding includes:
- Astroturf
- Carefresh bedding
- Alfalfa pellets
- Dirt without pesticides or fertilizers (baked to eliminate parasites and bacteria)
Maintain enclosure temperatures between 70–80°F with a basking area of 90°F.
Provide warm water soaks one to two times weekly or offer a shallow water dish for soaking and drinking.
Provide full-spectrum lighting using the Exo Terra Solar Glo to support proper calcium metabolism.
House only one tortoise per enclosure to prevent fighting injuries.
Outdoor Enclosure
Russian tortoises are excellent diggers and climbers.
Outdoor enclosures should include:
- Thick wood boards, concrete, or chicken wire buried approximately one foot underground
- Walls at least three feet high
- Protective screening above the enclosure
- Dry soil, gravel, or sand suitable for burrowing
- Shallow water dish
- Grasses and edible plants such as clover and hibiscus
- Bushes for shade
Keep the enclosure dry, as damp and humid environments negatively affect their health.
Diet
Russian tortoises require a:
- High-fiber diet
- Low-protein diet
- Calcium-rich diet
Do not feed cat or dog food.
Fruit may be offered only in moderation because excess sugar can cause digestive upset, bacterial overgrowth, and diarrhea.
Packaged spring mix provides a good variety of dark leafy greens, although tortoises generally prefer plants with leaves and roots attached.
Always provide dietary variety.
Use a 2:1 calcium-to-phosphorus supplement two to three times weekly while growing.
Do not use calcium supplements containing Vitamin D.
Avoid excessive vitamin and mineral supplementation.
Foods That Can Be Fed
- Banana
- Melon
- Sweet corn
- Dark leafy greens
- Kale
- Endive
- Escarole
- Hay (small amounts)
- Mixed vegetables
- Dandelions
- Lawn grasses free of pesticides
- Roses
- Clover
- Mulberry leaves
- Hibiscus
- Bok choy (small amounts)
- Berries
- Squash
- Apples (without seeds)
- Romaine lettuce
- Red leaf lettuce
- Green leaf lettuce
- Radicchio
- Turnip greens
- Mustard greens (small amounts)
- Collards (small amounts)
- Spring mix
- Hosta
- Sedum
- Prickly pear flowers, fruit, and pads (spines removed)
- Mallow
- Chrysanthemum flowers
- Cornflowers
- Dayflower
- Californian poppy
Foods Not to Feed
Avoid:
- Spinach
- Rhubarb
- Cabbage
- Peas
- Potatoes
- Beet greens
These foods contain oxalic acid, which binds calcium.
Legumes and cereal grains contain phytic acid.
Cabbage, kale, and mustard greens interfere with iodine absorption and should only be fed sparingly.
Hibernation
Russian tortoises naturally hibernate during winter.
Veterinary examination is recommended before hibernation.
During hibernation, body temperature decreases and immune function is suppressed.
Tortoises entering hibernation while ill may deteriorate and may not survive the hibernation period.
Common Diseases
Calcium Deficiency / Metabolic Bone Disease
Usually caused by:
- Inadequate dietary calcium
- Lack of UVB exposure
Signs include:
- Weak limbs
- Muscle tremors
- Soft shell
- Abnormal shell growth
Untreated disease may lead to:
- Broken bones
- Heart complications
- Kidney failure
Bacterial Infection (Shell Rot)
Usually caused by poor husbandry.
Shell rot may also develop secondary to systemic disease.
Herpes Virus
Russian tortoises may carry herpes virus without obvious signs.
The virus can spread to other tortoises and reptiles when housed together.
Hexamita parva
A parasite similar to Giardia that may affect:
- Kidneys
- Urinary tract
- Gastrointestinal tract
- Other organs
Signs include:
- Weight loss
- Dehydration
- Lethargy
- Decreased appetite
- Thick or slimy urine
- Urine with an ammonia odor
Urine and fecal testing can help diagnose this and other parasites.
Trauma
Russian tortoises may suffer injuries from:
- Fighting with other tortoises
- Dogs
Viral Stomatitis
Inflammation of the mouth caused by bacteria, viruses, fungi, or trauma.
Hepatitis
Inflammation of the liver caused by infectious organisms or other conditions affecting liver function.