Why Is My Tortoise Not Eating? Common Causes

A tortoise that ignores its favourite leaves can worry any keeper, particularly when it has normally eaten well. If you are asking, why is my tortoise not eating, the answer may be as simple as a change in temperature or routine, but a prolonged loss of appetite can also be an early sign of illness. The key is to check the basics promptly, watch your tortoise closely and know when to speak to a reptile vet.

Why is my tortoise not eating?

Tortoises do not eat with the same regularity as dogs or cats. A healthy adult may occasionally eat less for a day or two, especially after a weather change, a bath, a move or a disturbed routine. Young tortoises should be taken more seriously if they stop eating, as they have less reserve and can become dehydrated more quickly.

Appetite is closely linked to warmth, light, hydration and feeling secure. In UK homes, a small drop in enclosure temperature or a tired UVB bulb can be enough to reduce activity and feeding. Before assuming the worst, work through the husbandry checks below. If your tortoise is lethargic, losing weight, has swollen eyes, discharge from the nose or mouth, or has not eaten for several days, do not wait for a home fix – contact an experienced reptile vet.

Temperature is often the first issue

A tortoise needs enough warmth to digest food. If its basking area is too cool, it may sit quietly, avoid food and struggle to process any meal it does eat. This is particularly common during colder spells, when a room that felt suitable last week is no longer warm enough.

Use reliable digital thermometers to check temperatures at tortoise level, not simply the temperature of the room. Your enclosure should provide a warm basking area and a cooler end, so the tortoise can regulate its own body temperature. The correct range depends on species, age and set-up, but the basking area must be properly warm for the species you keep.

Do not try to compensate by heating the entire enclosure to one high temperature. A temperature gradient is essential. Equally, do not place a tortoise directly on an unregulated heat mat. Overheating and burns are real risks. A suitable basking lamp, thermostat where required and accurate thermometers make a considerable difference.

Check lighting as well as heat

UVB lighting supports calcium metabolism and normal activity in indoor tortoises. A tube or bulb can still look bright to us while no longer producing useful UVB. Follow the manufacturer’s replacement guidance rather than waiting for it to fail visibly. Make sure the light is at the correct distance, is not blocked by glass or plastic, and runs for a sensible daytime cycle.

Natural sunshine can be beneficial when conditions are safe, but British weather is not dependable enough to replace a correct indoor set-up. Outdoor time must always be supervised in a secure, predator-proof area with access to shade and shelter.

Stress, travel and a new home can stop feeding

Tortoises are creatures of routine. A new enclosure, unfamiliar noises, children handling them frequently, other pets nearby or a house move can all cause a temporary loss of appetite. A newly arrived tortoise may need time to settle before it eats confidently.

Keep handling to a minimum during this period. Provide a secure hiding area, maintain consistent lighting and temperatures, and offer food at the same time each day. Avoid continually changing foods in an effort to tempt the tortoise, as this can create more disruption and may encourage it to wait for less suitable treats.

A healthy captive-bred tortoise should become more settled once its environment is correct. At Tortoises 4 You, we provide free, friendly husbandry advice because getting the first few weeks right helps new keepers avoid many common problems.

Diet can be the problem – or the clue

Most Mediterranean garden tortoises, including Horsfield, Hermann’s and Marginated tortoises, need a high-fibre, weed-led diet. Suitable foods include a varied selection of safe weeds and leafy plants, such as dandelion, plantain, sow thistle, mallow and suitable prepared tortoise diets used appropriately.

A tortoise offered too much fruit, supermarket salad or rich foods may become fussy, develop digestive problems or simply lose interest in its normal diet. Iceberg lettuce is mostly water and has little nutritional value. Fruit should not be a routine food for these species.

Fresh food should be offered daily and removed before it spoils. Variety is useful, but introduce changes gradually. If you have recently changed the diet completely, return to an appropriate familiar food for a short time while checking the enclosure conditions. Never force-feed unless a reptile vet has specifically instructed you to do so.

Hydration matters more than many keepers realise

A dehydrated tortoise often eats poorly. Even species that come from dry regions need regular access to fresh water and benefit from appropriate bathing, especially youngsters. A shallow soak in lukewarm water can encourage drinking and may help stimulate appetite, but it is not a cure for an underlying illness.

Look for signs such as sunken eyes, thick or sticky saliva, unusually dry skin, reduced urates or a marked drop in activity. Weighing your tortoise weekly on digital kitchen scales is one of the most useful habits a keeper can develop. A written weight record can reveal a problem before it is obvious by eye.

Is your tortoise preparing to brumate?

As daylight shortens and temperatures fall, some tortoises naturally become less active and eat less in preparation for brumation. This is not something to guess at or manage casually. Not every species, individual or young tortoise should brumate, and an unwell tortoise must never be put into brumation.

A tortoise needs a proper health check, an accurate weight assessment and a carefully controlled plan before any planned brumation. If your tortoise has simply slowed down in autumn but is still living in a warm, lit enclosure, it may be responding to seasonal cues or it may be unwell. Seek tailored advice rather than allowing it to drift into a half-awake state without eating.

Signs that need veterinary attention

Husbandry corrections can help a well tortoise regain its appetite, but they should not delay treatment where illness is possible. Respiratory infections, mouth infections, parasites, retained eggs in females, pain, injuries and digestive blockages can all reduce feeding.

Arrange a reptile vet appointment promptly if you notice any of the following:

• No food intake for several days in a young, unwell or underweight tortoise.
• Noticeable weight loss, weakness or unusual sleepiness.
• Bubbles, mucus or discharge from the nose, eyes or mouth.
• Swollen or closed eyes, wheezing, open-mouth breathing or repeated stretching of the neck.
• Diarrhoea, blood, vomiting, a very hard abdomen or obvious straining.
• A fall, dog attack, shell injury or any concern that the tortoise has eaten unsuitable material.

Take clear photographs, note temperatures and lighting details, and bring a recent weight record if you have one. A fresh faecal sample may also be useful, but ask the practice how they would like it collected and stored.

What to do today

First, confirm that the basking temperature and UVB provision are correct for your species. Offer fresh, suitable weeds or leafy food, ensure clean water is available and give a gentle lukewarm bath if appropriate. Then leave your tortoise in peace to warm up and settle, rather than repeatedly picking it up to see whether it will eat.

Weigh it now and again over the next few days. If it takes a little food and is bright, alert and maintaining weight, a husbandry adjustment may be all that was needed. If it continues refusing food, loses weight or looks anything less than well, a reptile vet is the right next call. Acting early is kinder to the tortoise and usually gives the best chance of a quick recovery.