---
title: "Bearded Dragon Not Eating? UK Vet Guide"
description: "Why UK bearded dragons stop eating — brumation, low basking temperatures, impaction, parasites and stress. When appetite loss means booking an exotic vet."
url: "https://pethealth.org.uk/health/bearded-dragon-not-eating-uk"
canonical: "https://pethealth.org.uk/health/bearded-dragon-not-eating-uk"
date_published: "2026-07-18"
date_modified: "2026-07-18"
source: "PETHEALTH+"
---

# Bearded Dragon Not Eating? UK Vet Guide

A bearded dragon that stops eating is usually reacting to **incorrect temperatures, brumation, impaction or illness**. Check the basking spot reaches **38–42°C** and the cool end 22–26°C first. Weigh weekly — **weight loss means a vet visit**, not brumation. Persistent refusal needs a UK-registered exotic vet.

## First check: temperatures

According to the RSPCA, most appetite problems in bearded dragons trace back to husbandry — and temperature is the first thing to rule out. Bearded dragons are ectothermic: they cannot digest food properly when too cold, so a chilly vivarium quickly shuts down appetite.

| Zone | Target temperature |
|------|-------------------|
| Basking surface | 38–42°C |
| Cool end | 22–26°C |
| Night minimum | Not below 20–22°C |

- Measure with a **digital thermometer** at the basking surface and cool end — dial gauges are unreliable
- Run every heat source through a **thermostat** and check both ends daily
- If the room drops below 20–22°C at night, add a **ceramic (non-light-emitting) heater**

Vet Help Direct's UK vet team notes that chronically low temperatures can cause gut impactions, slow metabolism and poor immunity — all of which suppress appetite. See [Bearded dragon care UK](/health/bearded-dragon-care-uk) for the full setup.

## Brumation: the normal reason

Brumation is a natural slowdown over the cooler months, similar to hibernation. According to the RSPCA, during brumation bearded dragons slow down, sleep more and eat less — but they **should not stop eating entirely or lose weight**.

- Brumation-like behaviour is normal in **healthy adults**, not juveniles
- Weigh your dragon **weekly** — stable weight supports brumation; falling weight does not
- If weight drops, Vet Help Direct advises raising temperatures and lighting back to normal and booking a **veterinary examination**
- Never assume a first-time appetite loss is brumation without checking husbandry and health first

## Impaction

Impaction is a blockage of the gut, and it is a common reason UK bearded dragons stop eating. According to the RSPCA, risky substrates include:

- **Calci-sand** — can clog the digestive tract, especially when temperatures are too low for good digestion
- **Bark, wood chips, crushed walnut and corn cob granules** — easily swallowed and indigestible
- Loose substrates generally for **juveniles** — use reptile carpet, tiles or paper until fully grown

Signs of impaction, according to Vet Help Direct, include **lethargy, inappetence, bloating and failure to produce faeces**. A dragon with these signs needs an exotic vet — do not wait for it to pass on its own. More detail in [Reptile impaction UK](/health/reptile-impaction-uk).

## Illness and parasites

Appetite loss is one of the earliest signs of most reptile illnesses. According to the RSPCA and Vet Help Direct, watch for:

- **Parasites** — abnormal droppings, diarrhoea or constipation coupled with weight loss; your vet can test a fresh faecal sample. Coccidiosis is most common in young dragons kept in poor hygiene
- **Metabolic bone disease (MBD)** — muscle twitching, swollen limbs, weakness; caused by lack of UVB and calcium (see [Reptile metabolic bone disease UK](/health/reptile-metabolic-bone-disease-uk))
- **Respiratory infection** — increased breathing rate or effort, nasal discharge and lethargy
- **Egg binding** — a bloated, restless female with reduced appetite needs a nesting box and may need urgent vet care
- **Mouth or dental problems** — reluctance to chew, favouring soft food

## Stress and settling in

A dragon that has just arrived often refuses food for days. According to the RSPCA, you should:

- Set up and run the vivarium for **at least a week** before bringing your dragon home
- Leave the new dragon with food and water but **no handling for the first week**
- Expect reduced appetite while it adjusts — offer food daily and remove uneaten insects so they cannot bite

Other stressors include a vivarium that is too small (minimum 120 cm long for an adult), cohabiting dragons (house separately), and frequent disturbance. Over-handling also suppresses appetite — keep sessions to 10–15 minutes.

## When to see an exotic vet

Book a UK-registered exotic vet promptly if you notice any of the following:

- **Weight loss** at any point, even during suspected brumation
- No food taken for **more than 3–5 days** outside brumation
- **Bloating or no faeces** for several days (possible impaction)
- Diarrhoea, sunken eyes or a thinning tail base
- Open-mouth breathing, wheezing or nasal discharge
- Muscle twitching, swollen limbs or a soft jaw (MBD)

Reptiles hide illness well, so by the time appetite disappears the problem may be advanced. This guide cannot diagnose your pet — a hands-on examination by an exotic vet is the only safe route when the checks above do not solve it.

## FAQs

### How long can a bearded dragon go without eating?

Healthy adults can manage weeks with little food during brumation if their weight stays stable. Juveniles need daily feeding and should never go more than a few days without eating — a youngster refusing food needs a vet check quickly.

### Is my bearded dragon brumating or ill?

Brumating dragons slow down, sleep more and eat less, but according to the RSPCA they should not stop eating entirely or lose weight. Weigh weekly: stable weight suggests brumation; any weight loss, diarrhoea or discharge means book an exotic vet.

### Can low temperatures stop a bearded dragon eating?

Yes. Bearded dragons need a basking spot of 38–42°C to digest food properly. Chronically low temperatures slow the gut, causing appetite loss and even impaction. Check both ends of the vivarium with digital thermometers before assuming illness.

### What are the signs of impaction in a bearded dragon?

According to Vet Help Direct's UK vet team, impaction signs include lethargy, inappetence, bloating and failure to produce faeces. Loose or large-particle substrates such as calci-sand and bark chips are common causes. See an exotic vet promptly.

### When should I take a non-eating bearded dragon to the vet?

See a UK-registered exotic vet if your dragon loses weight, refuses food for more than 3–5 days outside brumation, or shows any other sign — sunken eyes, diarrhoea, bloating, breathing changes or weakness. Always rule out illness before assuming brumation.

## Sources

- [RSPCA — Bearded dragons](https://www.rspca.org.uk/adviceandwelfare/pets/other/beardeddragon)
- [Vet Help Direct — What's wrong with my Bearded Dragon?](https://vethelpdirect.com/vetblog/2020/10/19/whats-wrong-with-my-bearded-dragon/)
- [PDSA — Pet Health Hub](https://www.pdsa.org.uk/pet-help-and-advice/pet-health-hub)

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