Is my reptile an emergency? Free reptile urgency check
Most reptile problems start with temperature: a reptile below its preferred temperature zone cannot digest or heal. Answer three questions for a clear urgency answer in about a minute, free and without an account.
This page is general pet health information, not a diagnosis or treatment plan for your pet. Always confirm anything urgent with a licensed veterinarian.
What to do in the next hour
- Measure the basking surface and the cool end with a probe or infrared thermometer.
- Compare both numbers with the published preferred zone for your species.
- Check the ultraviolet B bulb: is it a working reptile bulb, and how old is it?
- Look for gaping, wheezing, mucus at the nose or mouth, or a dragging back leg.
- Weigh your reptile on a gram scale and compare with your last recorded weight.
- Run the free check below, then call a reptile vet if it says go now.
Published preferred temperature zones
Check these before you decide anything is a disease.
| Species | Preferred temperature zone | Note |
|---|---|---|
| Bearded dragon | 77 to 90 degrees Fahrenheit, 25 to 32 Celsius | Basking surface around 88 to 95 degrees Fahrenheit |
| Leopard gecko | 77 to 86 degrees Fahrenheit, 25 to 30 Celsius | Needs a measured warm to cool gradient |
| Ball python | 77 to 86 degrees Fahrenheit, 25 to 30 Celsius | Known for fasting for extended periods |
| Corn or rat snake | 77 to 86 degrees Fahrenheit, 25 to 30 Celsius | Appetite falls in cooler months |
| Boa constrictor | 82 to 88 degrees Fahrenheit, 28 to 31 Celsius | Weight is the measure to trust |
| Basking versus ambient | Basking around 5 Celsius above ambient | Creates the gradient a reptile regulates with |
| Night | Around 5 Celsius below daytime ambient | A natural drop is normal, a cold enclosure is not |
When it is not an emergency
- ●A bearded dragon eating less in the cooler months while holding weight, alert when warmed
- ●A leopard gecko refusing food for a few days around a shed, with a full tail base
- ●A ball python skipping meals for weeks while its weight stays steady
- ●Slower digestion for a day after a cold night, recovering once the basking spot is corrected
Related signs to watch
Sources
Every hour and temperature on this page traces to one of the veterinary references below. Numbers we could not trace to a named source were left out rather than estimated.
- -MSD Veterinary Manual - Important Husbandry Requirements for Selected Reptiles
- -UC Davis School of Veterinary Medicine - Bearded Dragon Care
- -LafeberVet - Clinical Medicine of Bearded Dragons
- -LafeberVet - Metabolic Bone Disease in Reptiles and Amphibians
- -Squibb, Ball Python Care, VetFolio
Last edited 2026-09-22. First published 2026-09-22. Written by the PetLumen editorial team. No veterinarian reviews this content.
PetLumen is an AI-assisted triage and monitoring tool. It does not diagnose, treat, cure, or prevent any condition. Always consult a licensed veterinarian for any medical concern about your pet.
If your pet is in distress - collapse, laboured breathing, seizures, uncontrolled bleeding, suspected poisoning, bloat, or trauma - stop and contact an emergency veterinarian or a poison control line immediately. Do not wait for a scan result.