What Is a Respiratory Infection in Leopard Geckos?
Respiratory infections (RIs) can affect leopard geckos, though they occur less frequently than in some other reptile species. They're caused by bacteria, viruses, or fungi that infect the airways and lungs. Most cases in leopard geckos are bacterial and respond well to veterinary treatment when caught early. Left untreated, RIs can become pneumonia and be fatal.
Signs of a Respiratory Infection
- Wheezing, crackling, or clicking sounds when breathing
- Mucus or discharge from the nostrils or mouth
- Bubbling around the mouth or nose
- Open-mouth breathing, or the gecko being unable to keep its mouth closed while breathing (a serious sign — seek vet care promptly)
- Lethargy and loss of appetite
- Labored or visibly effortful breathing
Quick Rule: Any audible breathing in a leopard gecko is abnormal. Healthy leopard geckos breathe silently. Wheezing or clicking warrants a vet visit.
What Causes Respiratory Infections?
- Low temperatures: The most common cause. A gecko kept too cool has a weakened immune response, making respiratory infections more likely.
- Persistently damp conditions and poor ventilation: Excess moisture combined with stagnant air promotes bacterial and fungal growth.
- Stress: Chronic stress from inadequate hides, frequent handling, or environmental instability suppresses immunity.
- Introduction of a sick animal: RIs can spread between reptiles. Always quarantine new animals for 60–90 days.
Is a Respiratory Infection an Emergency?
Early signs (mild wheezing, slight nasal discharge) warrant a vet appointment soon — within a few days. Open-mouth breathing, significant discharge, or visibly labored breathing is an emergency and requires same-day veterinary care. Do not wait to see if it improves on its own.
Treatment
Respiratory infections in leopard geckos require diagnosis and treatment by a reptile veterinarian. Treatment typically involves injectable or oral antibiotics. Your vet may also recommend supportive care in more severe cases.
- Ensure the warm hide surface reaches 88–92°F — warmth supports immune function.
- Maintain appropriate humidity with good ventilation — avoid excess moisture.
- Avoid placing the enclosure in drafty areas or near air-conditioning vents.
- Ensure fresh water is always available to help maintain hydration during recovery.
- Keep the enclosure clean and reduce stressors.
- Do not force-feed.
What Not to Do
- Don't attempt to treat a respiratory infection without veterinary diagnosis — bacterial, viral, and fungal RIs require different treatments.
- Don't increase humidity thinking it will help — excess moisture worsens most RIs.
- Don't house the gecko with others during illness.
- Don't delay care if open-mouth breathing is present.
How to Prevent Respiratory Infections
- Maintain correct temperatures at all times — verify with an infrared thermometer.
- Ensure the enclosure has adequate ventilation without drafts.
- Avoid placing the enclosure near air-conditioning vents or in drafty areas.
- Quarantine all new reptiles for 60–90 days before introducing them to your collection.
- Minimize stress — provide secure hides in both the warm and cool areas of the enclosure.
- Monitor your gecko during routine handling — early detection makes treatment far easier.
FAQ
Can a leopard gecko recover from a respiratory infection without a vet?
Some husbandry issues can cause symptoms that resemble a respiratory infection, but once a true respiratory infection is suspected, a reptile veterinarian should evaluate the gecko. Early treatment generally leads to the best outcome.
How long does treatment take?
Most uncomplicated bacterial RIs respond to a course of antibiotics over 2–4 weeks. Severe cases may take longer. Follow your vet's instructions for the full course even if the gecko appears to improve early.
Can respiratory infections spread to other reptiles?
Yes. Isolate any gecko showing RI symptoms immediately and disinfect all shared equipment. Wash hands thoroughly between handling animals.
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