By Dr Duncan Houston
A bearded dragon's enclosure is part of its healthcare. Heat, ultraviolet light and diet work together, so a bright lamp and a bowl of insects do not automatically mean the setup is meeting its needs.
This guide focuses on the central bearded dragon, Pogona vitticeps. Use it to check everyday care and recognise when a change in appetite or activity needs veterinary attention.
Quick Answer
Bearded dragons need a spacious enclosure with a measured temperature gradient, suitable UVB exposure, hiding places and an age-appropriate mixed diet. House them individually and check their behaviour, food intake and droppings daily. A dragon that becomes weak, loses weight or struggles to breathe needs veterinary assessment, even if you suspect brumation.
What should the enclosure provide?
For one adult, the RSPCA recommends at least 120 cm long by 60 cm wide by 60 cm high; larger accommodation allows more choice. Provide secure climbing branches, stable basking surfaces and hiding areas. House dragons separately to prevent competition and injuries. These are welfare recommendations, not a statement of local legal enclosure requirements.
For a conventional setup, the RSPCA's bearded dragon care guidance gives a hot basking zone of 38-42°C, a cooler end of 22-26°C and around 30-40% humidity. Its night guidance is to avoid temperatures below 20-22°C. Keep lights off overnight; use controlled, non-light-emitting heat if needed.
Measure the environment where the dragon actually sits. Use digital probes for air temperatures and an infrared thermometer for surfaces. A hot rock directly under a heater and the air nearby can give very different readings. Guard heaters, use an appropriate thermostat and leave a genuinely cooler retreat. Avoid electrically heated rocks because of burn risk. VCA explains temperature gradients and safe heating.
How do you get UVB lighting right?
UVB supports vitamin D3 production and calcium use. A bulb's percentage or product name alone does not tell you the exposure reaching your dragon: distance, fittings and barriers matter. Follow the lamp's installation instructions and check output with a suitable UV Index meter. RSPCA guidance targets UVI 3-5 at the basking position, with shade available. Replace lamps as instructed, even when they still produce visible light.
Window sunlight does not supply adequate UVB through glass. Have a reptile vet review the lighting layout alongside the diet, particularly for a growing dragon or one with health problems. See VCA's UV lighting guidance.
What should a bearded dragon eat?
Growing dragons need more insect food than adults, which generally eat more vegetation. Avoid treating a fixed percentage as a prescription for every age, body condition and reproductive stage.
- Offer varied, washed greens such as collard greens, dandelion greens and watercress, with other suitable vegetables.
- Use appropriately sized, captive-reared feeder insects. Feed the insects a nutritious gut-loading diet before offering them.
- Keep fruit occasional and avoid relying on fatty feeder insects. Never offer fireflies or insects collected where pesticides may have been used.
- Provide fresh water in a stable shallow bowl and replace it daily.
Ask your reptile vet for a calcium and vitamin schedule matched to your dragon and its UVB setup. More supplements are not automatically safer. Young dragons generally need feeding daily, often once or twice; adult portions and insect frequency should reflect body condition. VCA's feeding guidance explains these age differences and supplementation concerns.
How worried should you be about a change?
| What you notice | What it means for your next step |
|---|---|
| One missed adult meal, but normal movement and behaviour | Check measured temperatures and recent feeding. Record intake and watch for further changes rather than force-feeding. |
| New appetite loss with reduced activity, weight loss, unusual droppings or swelling | Contact a reptile vet today for triage. A juvenile or an already unwell dragon has less room for delay. |
| Laboured breathing, collapse, seizures or inability to stand | Seek emergency veterinary care now. |
This is a triage guide, not a diagnosis. Do not use a universal five-day wait for a dragon that stops eating. The other signs and the animal's age change the urgency.
Is it brumation or illness?
Brumation is a seasonal reduction in activity and metabolism. It can overlap in appearance with illness, so sleepiness and food refusal alone cannot confirm it. Do not deliberately cool an unwell dragon or assume that winter explains weight loss. A reptile vet should assess health before planned brumation. VCA's brumation advice explains why this distinction matters.
Other possibilities include inadequate heating, nutritional bone disease, parasites and infection. Trembling or poor limb support raises concern about calcium balance and bone strength; persistent diarrhoea may warrant faecal testing. Your vet may review enclosure measurements and recommend X-rays or blood tests. See VCA's guide to bearded dragon diseases.
In females, repeated straining, abdominal enlargement and deterioration also raise concern about reproductive disease. A female can develop eggs without mating. A suitable laying area helps, but a weak or distressed dragon needs examination rather than repeated changes to its nesting box. VCA describes egg-binding and its warning signs.
When is this an emergency?
Arrange immediate veterinary care for breathing difficulty, collapse, seizures, severe weakness or a suspected fracture. Mouth or nose bubbles with abnormal breathing also need urgent attention. Call ahead to find a clinic able to treat reptiles. Transport in a secure ventilated container, following the clinic's temperature advice; keep heat packs away from direct contact with the dragon.
What should you do next?
- Check the setup today. Record basking surface and air temperatures, cool-end temperature, lamp details and distance to the dragon.
- Keep a simple care record. Note meals, droppings, activity and weights taken consistently on the same scale.
- Review changes with your vet. Bring enclosure photographs, supplement labels and your observations. Ask whether a fresh droppings sample is useful.
- Avoid home treatment experiments. Do not give human medicines, force-feed a weak dragon or massage a swollen abdomen.
Common care mistakes
- Judging heat by touch or judging UVB by visible brightness.
- Increasing insect portions indefinitely as a juvenile becomes an adult.
- Assuming inactivity is always brumation.
- Using an unsuitable substrate without considering ingestion risk. Plain paper is useful for monitoring a new or unwell dragon; discuss a suitable long-term digging setup with your reptile vet.
Keep daily care safe and interesting
Give your dragon choices to climb, hide and explore without forcing interaction. Keep enrichment changes manageable so you can still identify what affects appetite or behaviour. Remove waste promptly and keep feeding equipment clean.
Healthy-looking reptiles can carry Salmonella. Wash hands after contact, keep dragons and their equipment away from food-preparation areas, and do not kiss them. Young children, older adults and people with weakened immunity are at greater risk. Follow the CDC's reptile hygiene guidance.
Frequently asked questions
Can a bearded dragon live without UVB?
Suitable UVB belongs in routine care. Supplements do not make an unsuitable lighting setup acceptable.
Why is my bearded dragon not eating?
Age, feeding pattern, temperature, seasonal changes and illness can all matter. Reduced activity or weight loss makes veterinary assessment more urgent.
Should I get my bearded dragon a companion?
Separate housing is the safer routine choice. Sharing can lead to competition and injuries.
Can I tell whether my dragon has parasites from its droppings?
No. Appearance alone cannot confirm parasites or show whether treatment is needed. Your vet can examine a sample in context.
The care check that matters most
Build care around measurements and your dragon's normal pattern. When that pattern changes, check the environment and act on the animal's condition instead of waiting for a fixed deadline.
For more practical animal-care information, explore ASK A VET™. If your dragon is weak or struggling to breathe, contact a veterinary clinic immediately.
The ASK A VET™ Tracker logs live location and activity trends, so a change in routine never goes unnoticed.
Every ASK A VET article is written and reviewed by qualified veterinarians.
