Bearded Dragon Care Guide
Bearded Dragon Brumation: Complete Guide to Lizard Hibernation
Updated July 31, 2026
What is brumation?
In the wild, Australian bearded dragons slow down during the cooler, darker months. They eat less, move less, and sleep for long stretches — conserving energy until warmth and food return. Captive bearded dragons often do the same thing, even with perfect temperature and lighting. It's driven by their internal clock, not poor care.
Unlike mammalian hibernation, brumating reptiles are not in a deep coma-like sleep. They may wake up occasionally, move around, drink water, then go back to sleeping. It's more like a very deep slowdown.
🔍 Signs your dragon is going into brumation
- Sleeping much more — earlier bedtimes, later wake-ups, napping during the day
- Refusing food — ignores insects and salads, even favorites
- Hiding more — spends most of the day in their cool hide
- Less active / less basking
- Pooping less or stopping (because they're not eating)
- Darker color sometimes (beard or belly darkening)
- Slightly lower movement response — slower, less interested
📅 When does brumation happen?
- Most common in fall/winter (shorter day length triggers it)
- Typically starts October–February in the Northern Hemisphere
- Usually affects adults 1.5 years and older
- Can last anywhere from 2 weeks to 4+ months
- Some dragons brumate every year like clockwork; some never do; some do it once and skip a year — all normal
🆘 Brumation vs. illness — how to tell the difference
This is the thing that panics new owners most. Here's the simple distinction:
| Sign | Brumation | Possible illness |
|---|---|---|
| Age | Adult (1.5+ yrs) | Any age, especially juveniles |
| Weight | Stable or very slow loss | Rapid weight loss |
| Body shape | Healthy, no sunken eyes | Sunken eyes, wrinkled skin, thin tail |
| When woken | Alert, reacts normally, goes back to sleep | Lethargic, unresponsive, weak |
| Mouth/nose | Clean | Mucus, bubbles, wheezing |
| Vent/cloaca | Clean | Diarrhea, blood, prolapse |
| Legs/jaw | Normal firmness | Swollen, soft, tremors (MBD) |
🛏️ How to care for a brumating dragon
- Before brumation starts: have a vet do a fecal exam to rule out parasites (parasites + brumation = dangerous). Make sure your dragon is at a healthy weight.
- Keep lights and heat on normal schedule. Don't turn off the UVB — they still need it when they wake to bask. Some keepers shorten the day cycle slightly, but a normal 12/12 cycle is fine.
- Offer fresh water every day. They may wake to drink.
- Weigh them weekly (in grams). Slow weight loss (a few grams) is normal. More than ~10% body weight loss is a red flag.
- Don't force food on a sleeping dragon — if they can't digest it, it rots in the gut.
- Limit handling — they're conserving energy; unnecessary waking stresses them.
- Keep the tank clean — spot clean as normal.
🦗 To feed or not to feed during brumation?
This is the #1 question. The rule is simple:
When they're fully asleep (hiding all day, not coming out):
Don't feed. Digestion requires heat and activity; food in a cold dragon can rot and cause serious illness. Their bodies live off fat stores.
When they wake up briefly:
Offer water and a small amount of greens. If they show interest in food, offer a few insects. If not, don't push it. Many dragons don't eat at all during brumation.
After brumation ends:
They'll wake up, bask heavily for a few days, then appetite returns strongly. Start with small meals and work back up to normal portions over a week. Use the feeding calculator for proper amounts.
⏰ When will they wake up?
They come out on their own when their body decides it's time — usually when days get longer/warmer. Don't try to "wake them up" by raising temperatures or handling; brumation is a natural biological process.
After waking, expect:
- 1-3 days of heavy basking before appetite returns
- A big poop after their first couple meals
- Normal activity and appetite within a week
- Males may head-bob and show breeding behavior
🦎 Track your dragon's weight year-round
A good kitchen gram scale is the single best tool for knowing whether weight loss is normal brumation or a problem. Weigh weekly and write it down.
Disclosure: As an Amazon Associate I earn from qualifying purchases. This guide is educational and does not replace advice from a reptile veterinarian.