Reptile respiratory infection
Signs of respiratory infection
The classic combination — none of these alone is definitive, but together they strongly suggest infection:
- Open-mouth breathing — most reptiles breathe through nostrils with mouth closed. Mouth-open breathing suggests respiratory difficulty.
- Audible wheezing, clicking, or whistling — listen carefully near the head
- Mucus around the mouth or nostrils — string, bubbles, or visible discharge
- Head held up or extended unusually — animal trying to keep airway open
- Lethargy — reduced movement, not basking normally
- Loss of appetite — refusing food
- Weight loss over weeks
One isolated sign (a single open-mouth breath after exertion, occasional yawning) is usually nothing. Sustained or combined signs warrant action.
Common causes
Husbandry triggers:
- Cool temperatures — the single most common contributing factor. Reptiles' immune systems become less effective at suboptimal temperatures. Verify with a digital probe.
- Humidity wrong for species — desert species in over-humid enclosures, tropical species in chronically dry enclosures.
- Poor ventilation — sealed enclosures without airflow encourage bacterial growth.
- Damp substrate — chronic moisture without drying cycles.
- Chronic stress — handling, traffic, cohabitation with incompatible animals.
- Recent acquisitions — new animals in quarantine often develop respiratory infections from transport stress and pet store conditions.
Immediate husbandry steps
While arranging a vet visit:
- Verify and correct temperatures — basking temperature must be species-appropriate
- Adjust humidity if it's wrong
- Improve ventilation if the enclosure is sealed
- Remove damp substrate; switch to paper temporarily
- Minimize handling and stress
- Increase basking opportunity slightly (some species benefit from higher temperatures to support immune function)
These help but rarely resolve an active infection. Most need antibiotic treatment.
When to see a vet
See a vet:
- Any sustained open-mouth breathing
- Audible wheezing
- Visible mucus around mouth or nostrils
- Lethargy combined with any of the above
- Weight loss combined with any of the above
Don't wait. Respiratory infections progress quickly. Catching one early improves outcomes dramatically; advanced infections can require injectable antibiotics, fluid therapy, and weeks of treatment.
Find an exotic vet through ARAV's directory.
Frequently asked questions
Is open-mouth breathing always a respiratory infection?
No — but it's the most common sign. Sustained open-mouth breathing or breathing combined with mucus is almost always concerning.
Can I treat a reptile respiratory infection at home?
Husbandry corrections help but rarely cure an active infection. Most require antibiotics from a vet.
What temperatures do reptiles need to fight infection?
Most reptiles benefit from a slight elevation toward the upper end of their species' temperature range during illness — supports immune function. Don't exceed species safe limits.
How do I prevent respiratory infections?
Maintain species-appropriate temperatures and humidity, ventilate enclosures properly, quarantine new acquisitions, minimize chronic stress.
How long does treatment take?
Mild infections caught early may resolve in 1-2 weeks. Advanced infections can require 4-6 weeks of antibiotic treatment.