---
title: "Reptile Respiratory Infection: UK Guide"
description: "Reptile respiratory infection in the UK — causes from excess humidity to cold rooms, signs like nasal discharge and wheezing, and when to call a vet."
url: "https://pethealth.org.uk/health/reptile-respiratory-infection-uk"
canonical: "https://pethealth.org.uk/health/reptile-respiratory-infection-uk"
date_published: "2026-07-18"
date_modified: "2026-07-18"
source: "PETHEALTH+"
---

# Reptile Respiratory Infection: UK Guide

Respiratory infections are among the most common reptile illnesses UK exotic vets see — usually triggered by **wrong humidity, poor ventilation or low temperatures**. Signs include **nasal discharge, wheezing, open-mouth breathing and lethargy**. Mild cases may respond to husbandry fixes; anything more needs an exotic vet.

## What is a respiratory infection?

Respiratory infections in reptiles are bacterial or fungal infections of the airways. According to Vet Help Direct's UK vet team, **excessive humidity and vitamin A deficiency** predispose reptiles to them. The British Chelonia Group (BCG) describes the tortoise version — rhinitis or 'runny nose syndrome' — and warns it can progress from the upper airways down into **pneumonia** in the lungs.

Reptiles are ectothermic, so their immune system only works properly at the right body temperature. A reptile kept too cold for too long has weakened defences — which is why respiratory problems spike in UK homes during winter (see [Reptile winter heating UK](/health/reptile-winter-heating-uk)).

## Common causes

- **Humidity too high for the species** — a bearded dragon in a damp vivarium is a classic UK example; desert species need around 30–40%
- **Poor ventilation** — the RSPCA stresses good airflow is essential to reduce respiratory infection risk
- **Low temperatures** — chronic chilling slows metabolism and immunity
- **Vitamin A deficiency** — from poor diet and lack of supplementation
- **Draughts and damp** — vivariums in cold rooms, conservatories or near windows in winter
- **Spread between animals** — the BCG notes respiratory infections are infectious; isolate unwell tortoises

## Signs by species

| Sign | Lizards | Snakes | Tortoises |
|------|---------|--------|-----------|
| Nasal discharge / bubbles | Yes | Yes | Runny nose, watery eyes |
| Breathing changes | Faster, harder breathing; open-mouth breathing | Wheezing, breathing with mouth open | Progression to pneumonia if untreated |
| Behaviour | Lethargy, appetite loss | Lethargy, refusing food | Lethargy, off food |
| Other | — | Excess mucus around the mouth | Often follows hibernation problems |

Any breathing noise in a reptile is abnormal — healthy reptiles breathe quietly.

## When to see an exotic vet

According to Vet Help Direct, **mild cases** may improve by correcting humidity and diet, but more severe cases need **veterinary attention and medication**. Book a UK-registered exotic vet without delay if you see:

- **Open-mouth breathing or gaping** in any reptile
- Nasal discharge, bubbles or mucus around the mouth
- Noticeably faster or more laboured breathing
- Lethargy with appetite loss lasting more than a day or two alongside breathing signs
- A tortoise with a runny nose — especially after hibernation — as pneumonia risk is real

Do not attempt home antibiotic treatment or guess doses — reptile medication must be prescribed and dosed by an exotic vet for the species and weight.

## Prevention

- **Match humidity to the species** — around 30–40% for bearded dragons and leopard geckos, 40–50% for corn snakes; measure with a hygrometer
- **Ventilate** — stuffy, wet vivariums breed bacteria and fungi; add vents rather than sealing heat in
- **Hold temperatures steady** — correct basking zones by day and safe minimums at night, all on thermostats with daily thermometer checks
- **Feed for immunity** — varied diet with proper vitamin and mineral supplementation as directed for the species
- **Quarantine and isolate** — keep new reptiles separate, and isolate any animal showing respiratory signs
- **Clean regularly** — spot-clean waste daily and fully disinfect the vivarium monthly with a reptile-safe product

## FAQs

### What are the signs of a respiratory infection in a reptile?

According to UK vets at Vet Help Direct, watch for increased breathing rate and effort, nasal discharge, lethargy and loss of appetite. In tortoises, the British Chelonia Group flags runny noses and watery eyes, which can progress to pneumonia.

### Can a reptile respiratory infection clear up on its own?

Very mild cases may improve when husbandry is corrected — proper humidity, ventilation, warmth and diet. But reptiles hide illness well, so anything beyond the mildest signs needs an exotic vet; untreated infections can descend into pneumonia.

### Why does my bearded dragon have a respiratory infection?

The usual triggers are humidity that is too high for a desert species, poor ventilation, and vitamin A deficiency, according to Vet Help Direct. Chronically low temperatures also weaken immunity, letting bacteria and fungi take hold.

### Is a reptile respiratory infection contagious?

It can be. The British Chelonia Group advises that tortoises with runny noses are infectious and should be isolated from other tortoises. Always wash hands and equipment between enclosures when one reptile is unwell.

### How do I prevent respiratory infections in reptiles?

Keep humidity in the species-correct range, ventilate the vivarium well, hold basking and night temperatures on target with thermostats, and feed a balanced, supplemented diet. Most UK reptile respiratory disease traces back to husbandry.

## Sources

- [Vet Help Direct — What's wrong with my Bearded Dragon?](https://vethelpdirect.com/vetblog/2020/10/19/whats-wrong-with-my-bearded-dragon/)
- [British Chelonia Group — Mediterranean tortoise care](https://britishcheloniagroup.org.uk/caresheets/caremed)
- [RSPCA — Reptiles as pets](https://www.rspca.org.uk/adviceandwelfare/pets/other)

Canonical HTML: https://pethealth.org.uk/health/reptile-respiratory-infection-uk
Last modified: 2026-07-18