One day, your active, hungry bearded dragon decides to go into their hide and simply... not come out. They refuse to eat. They sleep for days at a time.

For a new owner, this is terrifying. Is he sick? Is he dying?

Don't panic. Your dragon is likely going through Brumation.

As we briefly mentioned in our Health & Wellness Guide, brumation is the reptile equivalent of hibernation. It is a completely natural survival instinct, but it can be stressful for owners who don't know what to expect.

This guide will explain exactly what is happening to your pet and how to manage it safely.

What is Brumation?

In the Australian wild, temperatures drop during the winter months. Food becomes scarce. To survive, bearded dragons slow their metabolism down to a near-halt. They find a burrow, curl up, and "shut down" to conserve energy until spring returns.

In captivity, even though your tank lights are warm, your dragon’s biological clock can still sense the change in seasons (air pressure, ambient room temperature, shorter days outside).

Who brumates?

• Adults (12+ months): Very common.
• Babies/Juveniles (< 1 year): They should NOT brumate. Babies need to eat constantly to grow. If your baby dragon is lethargic, it is likely sick, not brumating. Check our guide onSigns of Sickness immediately.

Signs Your Dragon is Brumating

Brumation looks a lot like laziness, but more extreme.

• Excessive Sleeping: They may sleep for 24 hours straight, or even weeks.
• Hiding: They will seek out the coolest, darkest part of the tank (usually inside a cave).
• Loss of Appetite: They will stop eating entirely. Do not force feed them.
• Grumpiness: They might hiss or look annoyed if you try to disturb them.

"Brumation can sometimes be confused with pre-shed lethargy. Learn the difference in our bearded dragon shedding guide."

The Critical Check: Brumation vs. Illness

This is the most important part. Sickness and Brumation look identical (lethargy, no appetite). How do you tell the difference?

The Weight Test

• Healthy Brumation: A dragon will lose very little weight (maybe 5-10 grams over months) because their metabolism has stopped. They aren't burning calories.
• Sickness/Parasites: A sick dragon will lose weight rapidly. You will see their fat pads deflate and their tail get thin.

Pro Tip: Buy a kitchen gram scale. Weigh your dragon before they go into deep sleep. Weigh them once every two weeks. If their weight is stable, let them sleep. If they are losing weight fast, wake them up and go to the vet.

How to Care for a Brumating Dragon

Just because they are asleep doesn't mean you ignore them.

1. Hydration is Key: Even if they don't eat, they need water. Once a week, gently take them out and give them a lukewarm bath for 15 minutes. They might drink, poop, or just sleep through it. Then, dry them off and put them back in their cave.
2. Adjust the Lights: Some owners choose to reduce the daylight hours (e.g., from 12 hours to 8 hours) to mimic winter. Others leave the lights normal. Both methods are fine, but ensure the heat is still available if they choose to wake up.
3. Stop Feeding: This is crucial. Do not feed a dragon that is about to sleep. If they eat and then go into the cold to sleep, the food will rot in their stomach (literally) because they need heat to digest. Make sure their stomach is empty before they go into full brumation.

Waking Up

Brumation can last anywhere from a few weeks to 3 or 4 months. One day, they will simply pop their head out, look around, and act like nothing happened.

When they wake up:

• Turn the lights back to the normal summer schedule.
• Offer water immediately.
• Offer fresh greens and calcium-dusted insects. They will be hungry!

Summary

Brumation is a waiting game. It is boring for the owner, but essential for the dragon.

• Don't panic.
• Do weigh them regularly.
• Don't force them to eat.

Unsure if your dragon is brumating or actually ill? Compare their symptoms with our list of 7 Signs Your Bearded Dragon Is Sick to be safe.

Now, find out what your dragon is trying to tell you when it moves its head: Read our Body Language Guide!

Frequently Asked Questions About Bearded Dragon Brumation

What is brumation in bearded dragons?

Brumation is the reptile equivalent of hibernation. It's a natural survival instinct where bearded dragons slow their metabolism down to a near-halt during colder months. In the wild, they find a burrow, curl up, and "shut down" to conserve energy until spring returns. In captivity, even with tank lights, their biological clock can sense seasonal changes like shorter days and cooler ambient temperatures.

What are the signs my bearded dragon is brumating?

Key signs of brumation include excessive sleeping (sometimes for 24 hours straight or even weeks); hiding in the coolest, darkest part of the tank; complete loss of appetite; and grumpiness or hissing if disturbed. Unlike sickness, brumating dragons maintain stable weight and show no other signs of illness like diarrhea, black beard, or sunken eyes.

At what age do bearded dragons start brumating?

Brumation is common in adult bearded dragons (12 months and older). Babies and juveniles under 1 year should NOT brumate. Young dragons need constant nutrition for growth and development. If a baby or juvenile is showing brumation-like symptoms (lethargy, loss of appetite, excessive sleeping), it is likely a sign of illness requiring immediate veterinary attention.

How can I tell if my bearded dragon is brumating or sick?

The best way to differentiate is the weight test. A brumating dragon maintains stable weight (losing only 5-10 grams over months) because their metabolism has stopped. A sick dragon loses weight rapidly—you'll see deflated fat pads on their head and a thinning tail. Other sick signs include runny or foul-smelling poop, black beard, sunken eyes, and labored breathing. Weigh your dragon before brumation and every two weeks to monitor.

How long does bearded dragon brumation last?

Brumation duration varies widely. Some dragons brumate for a few weeks, while others sleep for 3 to 4 months. The length depends on the individual dragon, their age, and environmental factors. One day, they'll simply pop their head out and act like nothing happened. Don't force them to wake up—let them follow their natural cycle.

How should I care for my bearded dragon during brumation?

Key care tips: provide a lukewarm bath once a week for 15 minutes to maintain hydration; ensure fresh water is always available; do NOT feed them during deep brumation—food can rot in their stomach if eaten and not digested; maintain a heat source in case they wake up; and weigh them every two weeks to monitor weight stability. Never force them to eat or wake up.

Should I feed my bearded dragon during brumation?

No, you should not feed a bearded dragon that is in full brumation. If they eat and then remain in the cool environment, they cannot digest the food because they need heat for digestion. The food can rot in their stomach, leading to serious health issues. Ensure their stomach is empty before they enter deep brumation, and stop feeding when they first start showing signs of slowing down.

Do I need to change the lights during brumation?

Some owners reduce daylight hours (from 12 hours to 6-8 hours) to mimic winter conditions; others leave lights on their normal schedule. Both approaches are acceptable. However, always keep a heat source available in case your dragon wakes up and needs to bask. If you reduce lighting, ensure the tank doesn't get too cold for extended periods.

What do I do when my bearded dragon wakes up from brumation?

When your dragon wakes up, restore the normal summer lighting schedule. Offer fresh water immediately, then provide fresh greens and calcium-dusted insects. They will likely be very hungry. Monitor their weight and appetite to ensure they're recovering well. Most dragons return to normal behavior within a few days of waking.

Should I take my brumating bearded dragon to the vet?

A vet visit before brumation is recommended to ensure your dragon is healthy enough to brumate safely. A fecal test can rule out parasites, which can be fatal if a dragon brumates with an active infection. During brumation, a vet visit is necessary if you notice rapid weight loss, signs of illness (black beard, discharge, labored breathing), or if your dragon is under 12 months old showing brumation-like symptoms.