Bearded Dragon Brumation: Complete Guide & What to Do
Your beardie has stopped eating, is sleeping most of the day, and barely moves when you open the enclosure — and it’s October. In autumn, brumation is the most likely explanation for that pattern, but illness can look the same from the outside, so the single most important thing to know going in is this: brumation is safe for a healthy adult beardie, but confusing an actually sick beardie for a brumating one is the real risk. This guide covers the full protocol — what triggers it, how to prepare, how to monitor safely through it, and exactly when the pattern stops looking like brumation and starts looking like something else.
- What Brumation Is
- Do Captive Beardies Need to Brumate?
- When Do Bearded Dragons Brumate?
- Step 1: The Pre-Brumation Vet Check
- Signs Brumation Is Starting
- Should Juveniles Brumate?
- Preparing the Enclosure
- The Brumation Timeline
- Monitoring During Brumation
- Common Mistakes
- Coming Out of Brumation
- Brumation vs. Illness
- Brumating or Dead? How to Check
- FAQ
What Brumation Is
Brumation is the reptile equivalent of hibernation — a period of dramatically reduced metabolic activity that bearded dragons evolved to survive Australia’s cooler, drier winters. Wild beardies retreat to burrows and rock crevices as temperatures drop and food becomes scarce, slowing their metabolism to conserve energy until conditions improve. In captivity, where enclosure temperatures usually stay constant year-round, many adult beardies still enter brumation seasonally — the trigger isn’t cold air in the tank, it’s the shortened daylight hours (photoperiod) and, to a lesser extent, cooler ambient room temperature that filters through even a well-heated setup.
This is not sleep in the ordinary sense. A brumating beardie’s heart rate, digestion, and overall metabolic rate drop substantially, and they may go days between brief, sluggish wakings.
Do Bearded Dragons Hibernate?
Not exactly. Bearded dragons brumate, which is the reptile version of hibernation. The difference matters for care: a hibernating mammal lives off stored fat in a deep sleep, while a brumating beardie wakes now and then, drinks, may eat a little and moves around the enclosure. So you keep the lights and heat on a normal schedule, keep water available, and weigh weekly rather than leaving the dragon alone for months.
Do Captive Beardies Need to Brumate?
No. Brumation isn’t required for a captive bearded dragon’s health, and plenty of beardies — especially those kept under stable artificial photoperiods without seasonal light reduction — never brumate at all and live perfectly healthy lives. It’s also not something you should try to induce artificially by cooling the enclosure or cutting light hours dramatically; if your beardie’s body is ready for it, the normal seasonal light cycle is enough of a cue on its own.
You’ll see some guides argue the opposite: that skipping brumation shortens a dragon’s life. ReptiFiles makes that case without citing a study, and says the physiology is still being studied. What is documented (VCA) is that brumation helps drive the hormone cycle behind breeding. So the practical rule is the same either way: don’t block brumation in a healthy adult, and don’t force it.
When Do Bearded Dragons Brumate?
Adults. Brumation is almost exclusively a behavior of beardies 12 months and older, and the full pattern (weeks of near-total dormancy) shows up most often in sexually mature dragons of 18 months and up. A dragon under a year that seems to be brumating should be treated as a husbandry or health question, not a seasonal one.
The month depends on which hemisphere you live in, because the trigger is the season, not the calendar:
| Where you live | First signs | Deepest dormancy | Usually back to normal |
|---|---|---|---|
| Northern Hemisphere (US, Canada, UK, Europe) | Late September to November | November to January | February to March |
| Southern Hemisphere (Australia, NZ, South Africa) | April to May | May to July | August to September |
Want the season dates on your phone? Our free bearded dragon care calendar adds the brumation window, a pre-brumation vet check and weekly weigh-in reminders to your calendar.
Those Southern Hemisphere months are the original ones. In inland Australia, wild bearded dragons go down for the winter from roughly May through August, when daytime highs sit around 68–72°F and nights drop into the low 40s (VCA). A pet in a heated tank never feels that cold, which is why the main cue for a captive dragon is the shrinking day length, with a cooler room adding to it. VCA puts more weight on room temperature (a house that stays below 60°F for several days); the husbandry community puts more on the photoperiod. A dragon in a normal home gets both cues every autumn.
How often does it happen?
Once a year is the usual rhythm, and only in some dragons. Others skip years, brumate only lightly, or never do it at all. A dragon that brumated hard last winter and shrugs off this one hasn’t developed a problem. Individual variation is the rule here, so there is no “normal” dragon to measure yours against.
Brumation in summer
It happens, and it is the version to be most suspicious of. A summer slowdown usually traces back to a cue you created without noticing: a light timer that got shortened, an air conditioner vent blowing across the enclosure, a UVB tube past its useful life (they lose output long before they stop lighting up), or a basking spot that has drifted below 100°F. Fix the husbandry first. If the dragon is a healthy adult, the enclosure checks out, and the dormancy still looks like textbook brumation (stable weight, responsive to touch), let it run and monitor as described below. If anything else is off, treat it as illness until a vet says otherwise.
Step 1: The Pre-Brumation Vet Check
Signs Brumation Is Starting
The transition into brumation is gradual, typically developing over a few weeks rather than appearing overnight:
- Decreasing appetite, eventually refusing food most or all of the time
- Increasing sleep, including sleeping through the normally active mid-morning period
- Seeking out cooler, darker corners of the enclosure rather than the basking spot
- Reduced overall activity and responsiveness, though still alert when disturbed
- Digging or burrowing behavior in substrate, if available
- Occasional black beard episodes during the transition (see our black beard guide)
- Stable weight and normal-looking body condition throughout — this is the critical differentiator from illness
What it looks like day to day
Once a dragon is fully down, expect long stretches of stillness. Some sleep for days at a time in a hide or a cool corner, waking briefly to shift position or drink, then going back under. Some doze with their eyes half open or fully open, which unnerves owners but is common in a light state of dormancy. Color often goes dull and darker than usual; VCA lists darker skin as a normal brumation sign in lizards. A brumating dragon may not poop for weeks, and that is fine if the gut was empty going in (more on that below).
What stays true throughout: the dragon still responds when you touch it, even if the response is just an eye flick or a slow shift, and the body stays filled out. Those two things are your line between brumation and trouble.
Should Juveniles Brumate?
No. Beardies under 12 months haven’t built the fat reserves needed to safely sustain a true brumation period, and juveniles rarely enter full dormancy — when a young beardie appears to be trying to (significant sleep increase, appetite drop), it’s a red flag for a husbandry problem or illness rather than normal seasonal behavior. Check temperatures and UVB immediately, and if a juvenile is showing this pattern for more than a day or two with no clear husbandry explanation, get an exotic vet involved. See our sleeping too much guide for the full differential in young beardies specifically. A settled, healthy juvenile normally eats every day (see our feeding schedule), so one that goes off its food for more than a day or two, outside a shed or its first couple of weeks in a new home, has a setup or health problem, not a seasonal one.
Preparing the Enclosure
Contrary to some older advice, you should not artificially cool the enclosure to “induce” or “help” brumation. During brumation, beardies naturally seek cooler areas and regulate their own temperature exposure — maintaining your normal enclosure temperatures and simply letting the beardie choose where to spend time is the correct approach. What you should adjust:
- Photoperiod: Reduce lighting hours to 10-12 hours daily through autumn and winter, down from the 12-14 hours used in summer. This mirrors the natural seasonal cue and is appropriate whether or not your beardie ends up brumating.
- Keep UVB running on the normal schedule — don’t turn it off even if the beardie is inactive; brief waking periods still benefit from UVB exposure.
- Provide a dark, secure hide — a covered hide box or a spot with tighter cover gives the beardie somewhere to retreat that feels safe for extended dormancy.
- Leave food available periodically rather than removing it entirely — some beardies eat small amounts intermittently even during brumation.
Let the last meal clear first
This is the step new owners most often miss. Digestion runs on basking heat, and a dragon that goes fully dormant with a belly full of undigested insects can end up with that food sitting and rotting in the gut. So when appetite starts dropping, don’t shorten the light hours any further yet. Keep the basking light on its current schedule for another week or two so anything already eaten gets digested and passed. A warm bath (85–90°F water, 10–15 minutes) often prompts a bowel movement. Once the dragon has emptied out and stopped eating on its own, it is ready to go down.
The Brumation Timeline
Duration varies considerably. Most brumation episodes last somewhere between two weeks and three to four months, with many beardies settling into a pattern of roughly four to eight weeks. Some beardies brumate in a single continuous stretch; others cycle through several shorter periods of dormancy and brief activity across the winter rather than one unbroken period. Neither pattern is more “correct” than the other — individual variation here is normal.
| Stage | What you’ll see | What to do |
|---|---|---|
| Winding down (a few weeks) | Eats less, sleeps more, spends more time in the cool end, may dig | Book the vet check and fecal test; keep temperatures normal; let the last meal clear |
| Going down (first 1–2 weeks of dormancy) | Stops eating, sleeps most of the day, stays hidden | Trim lights to 10–12 hours; weigh and log the starting weight |
| Deep brumation (2 weeks to 3–4 months) | Sleeps for days at a time; brief wakings to reposition or drink | Weigh weekly; warm bath once or twice a week; gentle touch check every few days; otherwise leave it alone |
| Waking up (1–2 weeks) | More time out of the hide, basking again; appetite lags behind activity | Bring lights back up with the season; offer easy food like hornworms; keep weighing |
| Recovery (2–4 weeks after) | Appetite and weight climb back to baseline | Fecal recheck if it has been close to a year; return to the normal feeding schedule |
Monitoring During Brumation
Weigh Weekly
Use a digital gram scale kept just for your dragon, weigh at roughly the same time each week, and record the number. A brumating beardie’s weight should stay essentially stable — some very minor fluctuation is normal, but a clear downward trend is your key warning sign.
The 10% Rule
Weight loss exceeding 10% of body weight at any point during brumation — a 400g beardie dropping to 360g or below, for example — means calling your vet within 24 hours, however “normal” the rest of the pattern looks. The 10% line is a rule of thumb, not a clinical cutoff: VCA’s brumation guidance doesn’t set a number, and 10% is the threshold reptile care references such as ReptiFiles use. If the weight keeps sliding week after week, call your vet before it gets there.
Here is the line for common adult weights, so you don’t have to do the math at 11 p.m.:
| Weight going in | 10% lost (call the vet) |
|---|---|
| 300 g | 270 g |
| 350 g | 315 g |
| 400 g | 360 g |
| 450 g | 405 g |
| 500 g | 450 g |
| 550 g | 495 g |
| 600 g | 540 g |
Hydration
Offer a warm bath once or twice a week even during brumation, primarily for hydration support. Many brumating beardies will drink during a bath even when they show no interest in food. Skin tenting or sunken eyes alongside brumation are dehydration signs that need attention beyond a routine bath.
Periodic Responsiveness Checks
A gentle check every few days — enough to see the beardie respond, even sluggishly, to a light touch — confirms they’re still normally arousable. A beardie that can’t be roused at all, or that shows no response whatsoever over an extended period, needs veterinary attention.
Common Mistakes
- Force-feeding. Don’t force-feed a brumating beardie without veterinary guidance — it causes stress without benefit in an otherwise healthy dormancy, and can be actively harmful if the beardie is actually ill rather than brumating.
- Artificially inducing brumation. Deliberately dropping enclosure temperatures to trigger dormancy is unnecessary and increases risk; let the natural photoperiod shift do the work.
- Skipping the vet check. Assuming brumation without a wellness exam and fecal test means a genuinely sick beardie could go untreated for months.
- Ignoring weight loss because “it’s supposed to happen.” Some weight change is expected; a 10%+ drop is not something to wait out.
- Disturbing sleep unnecessarily. Routine waking or handling during brumation adds stress for no benefit — a brief responsiveness check is enough.
Coming Out of Brumation
Beardies typically become gradually more active over 1-2 weeks as brumation ends, with appetite returning slowly rather than immediately. Offer easy, appealing food to help kick-start feeding again — soft-bodied feeders like hornworms are particularly effective for breaking a post-brumation feeding strike thanks to their bright color and easy digestibility. Keep monitoring weight through this recovery period, since appetite can lag behind activity by a week or two. A post-brumation fecal recheck is worth scheduling if it’s been close to a year since the last one — a parasite load can quietly worsen over a winter of dormancy. See our parasites guide for the full testing schedule.
Brumation vs. Illness
| Sign | Brumation | Illness |
|---|---|---|
| Season | Autumn/winter onset | Any time of year |
| Onset speed | Gradual, over a few weeks | Can be sudden |
| Weight | Stable, minor fluctuation only | Progressive decline |
| Body condition | Proportionate, hydrated appearance | Spine/hip bones becoming prominent |
| Responsiveness | Sluggish but responds to touch | May be unresponsive or distressed |
| Physical symptoms | None | Swelling, discharge, breathing changes, abnormal stool |
| Age | Almost always 12+ months | Any age |
The single most useful differentiator: a brumating beardie maintains weight and body condition; a sick beardie deteriorates. When in doubt, weigh and call the vet — a fecal test and wellness exam cost far less than treating an illness that’s been left to progress for weeks under the assumption it was “just brumation.”
When it probably isn’t brumation
Brumation comes on gradually, in autumn or winter, in an adult that has eaten well all year, and its weight holds. Get a vet check before you treat any of these as brumation:
- Under a year old. A settled, healthy juvenile normally eats every day (see should juveniles brumate?).
- Any dragon with a swollen belly, or a female that’s digging and restless. A swollen belly is not part of normal brumation. Swollen means bigger, tighter, harder or more lopsided than normal for your dragon, not the soft, even roundness of a well-fed adult; a brumating dragon’s belly still has some give. Females can develop eggs without a male, and a gravid female often eats less but should stay bright and alert. If the dragon is also weak or much sleepier than usual, or a female keeps trying to lay without producing eggs, it may be egg binding or a blockage. VCA warns egg binding can be life-threatening, so go to a reptile vet the same day. Otherwise book a vet visit within a few days; our not-eating guide covers laying boxes.
- A sudden or unexplained slowdown. Brumation usually comes on over a few weeks, so an adult that goes quiet within days, or out of season with anything else off, needs checking. Illness can look like brumation. In a 2024 study of 54 bearded dragons with heart or blood-vessel disease, the most common exam finding was a change in mentation (a duller, less alert dragon), and the authors say vets should keep it in mind for dragons with vague signs of illness. Our symptom checker sorts how urgent other signs are.
- New to you. A dragon you’ve had for only a few weeks that stops eating and hides is usually still settling in (see new home adjustment), and it may have brought parasites with it. Keep temperatures normal and book a new-pet exam with a fecal test.
Brumating or Dead? How to Check
This is the question that fills bearded dragon forums every November, and it is a fair one. A dragon deep in brumation can look alarmingly lifeless: limp, cool to the touch, eyes closed or half open, no breathing you can see at a glance. Here is how to check without stressing the dragon or yourself.
- Watch for breathing for a full minute. Look at the flanks just behind the front legs, or at the throat. A brumating dragon breathes slowly and shallowly, and you may see only a few breaths in a minute. Ten seconds of watching tells you nothing.
- Touch a foot or the side of the body. A brumating dragon almost always gives you something: an eye opening a crack, a leg tensing, a slow shift away from your hand. It may not wake up. It doesn’t need to.
- Feel the body. Dormant is limp but supple; the legs move freely and the belly still has some give. A dragon that has died stiffens within hours (rigor mortis), then can go limp again a day or two later, so stiffness is a strong sign but limpness alone is not proof of life. Sunken, cloudy eyes, a mouth that hangs open, and a smell that develops within a day or two at tank temperatures are the other tells.
- Try a lukewarm bath. Ten minutes in shallow 85–90°F water usually gets a brumating dragon to lift its head, shift, or drink. It is the single most reliable at-home check.
- Don’t rely on color. Brumating dragons often go dull and dark, and a dragon that has died darkens too. Color tells you nothing on its own. Breathing and touch response do.
If you have done all five and still aren’t sure, call your exotic vet rather than waiting it out. Reptile vets confirm a heartbeat with a Doppler probe because a brumating dragon’s heart rate is often too slow and faint to find by hand, and the check takes a minute. Our find-a-vet page lists reptile vets by state if you don’t already have one.
FAQ
Do bearded dragons hibernate?
How long does bearded dragon brumation last?
Should I feed my bearded dragon during brumation?
Do I need to lower the temperature in the tank for brumation?
Can juvenile bearded dragons brumate?
How much weight loss during brumation is too much?
Why did my bearded dragon suddenly stop brumating?
How do I get my bearded dragon out of brumation?
My bearded dragon woke up from brumation but won’t eat. Is that normal?
How do I know if my bearded dragon is brumating or sick?
Could my female bearded dragon be gravid instead of brumating?
Is my bearded dragon brumating or dead?
Do bearded dragons brumate with their eyes open?
Can a bearded dragon brumate in summer?
How often do bearded dragons brumate?
Do bearded dragons poop during brumation?
Can I hold my bearded dragon during brumation?
My bearded dragon is awake but stays in its hide. Is that normal?
Should I clean the tank while my bearded dragon is brumating?
The Bottom Line
Brumation is normal, and for a healthy adult bearded dragon, safe to let happen without much intervention beyond monitoring. The protocol is simple: get a vet check first to rule out illness, keep temperatures normal while reducing photoperiod seasonally, weigh weekly, and treat a 10% weight loss as the latest point to call your vet, not the first. Reasonable sources disagree on exact duration and whether every beardie needs to brumate at all — they don’t — but weight and body condition are the most practical way to tell dormancy from danger.
For the behaviors and health questions that come up around brumation, see our guides on sleeping too much, bearded dragon not eating, black beard, and our complete health guide.
This article is for educational purposes and reflects current best practices in bearded dragon husbandry. If you are concerned about your bearded dragon’s health during or around brumation, consult an exotic veterinarian. Use ARAV’s directory to find a qualified reptile vet near you.
Some keepers adjust nighttime heating during dormancy — see our complete night heat guide for equipment and safe temperature ranges.
Getting basking temperatures right on the way out of brumation matters. See halogen heat lamps for bearded dragons.
Sources & Further Reading
- VCA Animal Hospitals — Brumation in Bearded Dragons (Gregory Rich, DVM)
- VCA Animal Hospitals — Bearded Dragon Husbandry
- ReptiFiles — Bearded Dragon Brumation
- BeardedDragon.org — Brumation: What’s Normal, What’s Not
- Washington State University Veterinary Teaching Hospital — Bearded Dragon Husbandry
- ReptiFiles — Intestinal Parasites in Bearded Dragons
- Association of Reptile and Amphibian Veterinarians (ARAV) — Find a Reptile Vet
- Ozawa SM, et al. (2024). Cardiovascular disease in central bearded dragons (Pogona vitticeps): 54 cases (2007–2022). American Journal of Veterinary Research 85(5)
- VCA Animal Hospitals — Reptiles: Dystocia (Gregory Rich, DVM, and Rick Axelson, DVM)
- ReptiFiles — Bearded Dragon Egg Laying
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