Brumation and hibernation
Which reptiles slow down in winter, and how to keep them safe.
What is brumation?
Brumation is a natural period of reduced activity some reptiles go through in cooler months. They eat less, sleep more and may hide for weeks. It's similar to hibernation, but not exactly the same.
Which species?
Bearded dragons commonly brumate. Mediterranean and Horsfield's tortoises hibernate. Many tropical species never should.
Before it starts
- Only healthy animals at a good weight should brumate or hibernate.
- Get a vet check before your tortoise's first hibernation with you.
- Weigh before, during and after.
Tortoise hibernation
Hibernating tortoises need stable temperatures around 5°C (between about 3 and 7°C). A dedicated fridge with a thermometer is the most reliable method. Too warm and they burn through their reserves; too cold is dangerous.
If you're unsure whether your reptile should brumate or hibernate, speak to an exotic vet first.
This guide is general advice. For health concerns, always speak to an exotic vet.
Last updated October 2026. Care guidance is subject to change as husbandry research develops.
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