Bearded Dragon Brumation

Bearded dragon brumation is a period of reduced body temperature, activity, and appetite. Many pet Pogona vitticeps enter it as day length shortens and temperatures drop. It mirrors the dormancy wild dragons go through in Australia from roughly May through September.

Temperatures there then range from about 5 to 18°C (41 to 64°F).

Captive dragons on a northern hemisphere light cycle usually brumate in fall or winter instead. Brumation is normal in a healthy adult. Several illnesses look the same from the outside, so this guide focuses on telling the two apart.

What brumation actually is

Bearded dragon brumation is not hibernation in the mammal sense. A brumating dragon does not enter one fixed deep sleep. It slows its metabolism and drops its preferred body temperature.

Pet dragons often show a lighter version and may still get up to drink.

Wild dragons bury themselves in soil or shelter in fallen logs and tree stumps. Unlike mammal hibernators, they are not known to have periodic warm up arousals during the season. They rewarm by basking once they emerge.

Body temperature tracks the surroundings, and breathing and heart rate are thought to fall with it. Merck Veterinary Manual lists hibernation as not required for bearded dragons in captivity. A healthy pet that never brumates is not missing anything.

In the wild, the slowdown tracks a drop in food availability and cooler temperatures. It also resets hormone cycles ahead of the spring breeding season, and wild Australian dragons breed from September through March.

Merck notes that most reptile species need some conditioning before breeding, such as hibernation or seasonal night cooling. That is why breeders often cool their animals first.

Triggers, age, and timing

Two things mainly trigger bearded dragon brumation: shorter day length and a drop in ambient or enclosure temperature. A basking spot that once reached the mid 90s Fahrenheit but now runs cooler, plus fewer daylight hours, is often enough. This can happen even if the heat and light timers were never changed on purpose.

Most dragons do not brumate until they are close to full grown, usually sometime in their second year. By then, normal feeding frequency has already dropped from daily to about every 48 to 72 hours as growth slows. Juveniles under a year old rarely brumate at all.

If a young dragon under a year old stops eating and goes lethargic, treat it as a health concern first. See bearded dragon not eating for a health first checklist rather than assuming brumation.

Onset and length vary a lot between individuals. Some dragons show only a few days of reduced appetite. Others go through several weeks of near total inactivity.

Some stretch to two or three months. The wild season itself lasts about four months. No veterinary source sets a fixed ceiling for pets, so a few weeks to three months is the common keeper standard.

Treat anything past the length of a wild season, about four months, as a reason to call a reptile veterinarian.

The decision rule: brumation or illness

Weight is the single most useful number to track. Weigh the dragon once a week on the same scale all through brumation, the common keeper standard. Weight should stay essentially stable through the dormant period.

If weight is dropping rather than holding steady, something is wrong. Either the dormancy is not benign bearded dragon brumation on its own, or an illness is compounding it. Either way, the dragon needs an exam.

Also weigh the setup itself. A dragon kept at ordinary household warmth, roughly 60 to 70°F, with no seasonal cooling, should not be entering true brumation. Lethargy and appetite loss under steady, adequately warm conditions points toward illness instead.

Watch for signs that override any brumation explanation. These include labored or open mouth breathing, discharge from the nose or eyes, a limp or swollen limb, diarrhea, or a strong odor.

An animal that cannot right itself when turned over is another. Any of these calls for same day veterinary care regardless of the season.

Vet check and fecal exam before brumation

Have any dragon that shows early signs examined by a reptile veterinarian, including a fecal exam for intestinal parasites. This matters most for a dragon that has been thin, had loose stool, or missed a recent parasite screen. It also matters for any dragon a keeper plans to cool on purpose for breeding.

Veterinary guidance is explicit on the risk. A dragon on an inadequate diet, or carrying an undetected parasite load, can wake from bearded dragon brumation critically ill. The dormant weeks give a low grade problem time to worsen while digestion and immunity both slow down.

A checkup before brumation typically confirms body condition, checks for retained shed, and screens a fresh stool sample. A dragon that is thin or shows parasites on the exam should be treated and stabilized first. A dragon already brumating in that condition should be warmed back up and treated instead of left to continue.

Temperature, light, water, and handling during brumation

Keepers manage the period in one of two ways. They can let it happen with only light adjustments, or they can lower temperatures on purpose for breeding. Either way, the basking side should still offer a real thermal gradient, since even a dormant dragon needs somewhere warmer to move to.

• Keep fresh water available at all times. A brumating dragon retains some activity and may get up to drink even while refusing food.
• Do not force feed the animal. Digestion slows sharply at lower body temperature, and undigested food in a cool gut is a common cause of impaction.
• Check on the dragon daily without disturbing it constantly. A brief look at breathing, posture, and droppings is enough.
• Weigh the dragon weekly on the same scale and record the number. A stable reading is the clearest sign that brumation is going normally.
• Run the UVB bulb on its normal schedule even if the photoperiod is shortened. Calcium metabolism depends on it during any period of continued activity. The bearded dragon care sheet covers baseline UVB and heat targets.

A deliberate breeder style cool down lowers daytime and nighttime temperatures gradually over one to two weeks rather than all at once. That step down is a common keeper standard rather than a published protocol. It is kept to a defined number of weeks agreed with a vet or an experienced breeder.

Enclosure temperature swings outside of a planned cool down are worth checking against normal targets. See the bearded dragon temperature guide for basking, cool side, and night ranges by age.

Waking up and refeeding

Most dragons come out of bearded dragon brumation on their own once full daylight length and basking heat return. Restore the photoperiod and basking temperature over a few days if either was lowered. Let the dragon warm itself fully before expecting it to eat.

UC Davis veterinary guidance gives the normal schedule to return to. That is 14 hours of light and 10 of dark, a basking spot of 88 to 95°F, and nights at 70 to 75°F.

Offer a light meal once the dragon is basking normally on a warm, alert day. A few appropriately sized insects or a small amount of leafy greens is enough. Do not offer a full grown meal on the first day back, because a large feeding into a slow gut can trigger regurgitation or impaction.

If the dragon shows no interest in food within one to two weeks of full warmth, schedule a veterinary exam. The same applies if the weekly weight check keeps showing loss instead of stability. A dragon that comes out of dormancy thin, weak, or unable to grip normally should be treated as a medical case.

A dragon’s shed cycle can also look irregular right after a long dormant stretch. See bearded dragon shedding if flaky or patchy skin persists past the first week back to normal feeding.

One behavior among many

Bearded dragon brumation is only one seasonal pattern in a much wider behavior set. Beard displays, head bobbing, arm waving, and color change involve separate triggers and do not signal dormancy on their own. For the full picture of what a dragon’s posture and color mean day to day, see the bearded dragon body language guide.

Related topics covered on their own pages include normal sleep patterns, gaping, and handling and bonding. None of those are unique to the brumation period, so this guide covers them only in passing.

Frequently Asked Questions

Do bearded dragons hibernate?

Not in the true hibernation sense used for mammals. They brumate instead, a reptile specific dormancy with reduced body temperature and activity. A brumating dragon can still rouse, drink, or shift position on a warmer day, unlike a mammal in deep hibernation.

How long do bearded dragons brumate?

Most periods run from a few weeks to two or three months. The wild season lasts about four months, from May to September in Australia, and no veterinary source fixes a ceiling for pets. Duration varies by individual and by year, so track weight rather than a fixed calendar date.

When do bearded dragons go into brumation?

Most captive dragons in the northern hemisphere start showing signs in fall or winter as days shorten and household temperatures dip. This usually happens once they are close to full size, in their second year. Wild dragons in Australia go dormant from roughly May through September.

What are the warning signs that it is not normal brumation?

Ongoing weight loss on weekly checks, labored breathing, discharge from the eyes or nose, diarrhea, or total unresponsiveness are not features of normal dormancy. A dragon housed at steady, warm household temperatures with no seasonal light change also should not be brumating at all.

Should I feed a bearded dragon during brumation?

No. Do not force feed a dormant dragon, since slowed digestion at a lower body temperature raises the risk of impaction. Keep fresh water available, since the animal may still get up to drink even while refusing food.

Do baby or juvenile bearded dragons brumate?

Rarely. It mostly appears in dragons close to full growth, generally in their second year, once feeding frequency has already dropped to about every 48 to 72 hours. A young dragon under a year old that stops eating should be checked for illness rather than assumed to be brumating.