Bearded Dragon Not Eating: Causes & What to Do
| Common non-illness causes | Brumation, low temps, stress, shedding |
| When to see a vet | 2+ weeks refusal with weight loss |
Brumation
Seasonal slowdown in adults, typically over the cooler months, is a common and normal cause of reduced appetite even in an indoor, climate-controlled enclosure. Weight should be monitored but not force-fed through.
Temperature problems
A basking spot that's too cool slows digestion and suppresses appetite directly. Check with a probe thermometer before assuming anything else is wrong.
Stress and shedding
New environments, recent handling, cage changes, or an active shed cycle can all suppress appetite temporarily. This usually resolves within days once the trigger passes.
When to worry
Refusing food for more than two weeks combined with noticeable weight loss, lethargy, or other illness signs (discharge, abnormal stool, laboured breathing) warrants a reptile vet visit rather than continued waiting.
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A single adult bearded dragon needs a minimum 4ft x 2ft x 2ft enclosure, with 6ft x 2ft x 2ft increasingly recommended as best practice — plus a linear T5 HO UVB tube, an overhead basking bulb on a thermostat, a real thermal gradient, a sturdy basking platform, and a shallow water dish.
A complete bearded dragon setup needs a 4ft+ enclosure, a linear T5 HO UVB tube, an overhead basking bulb on a thermostat, two thermometers, a basking platform, a hide, a shallow water dish, and age-appropriate substrate — all running and stable for at least 48 hours before the dragon arrives.
Hatchlings can start in a 20-gallon long tub, juveniles need to move to roughly a 40-gallon breeder footprint by a few months old, and adults need a minimum 4ft x 2ft x 2ft enclosure, with 6ft x 2ft x 2ft recommended.
Basking surface temperature should run 95–110°F depending on age (hotter for hatchlings, cooler for adults), with a cool side around 75–85°F, all provided by an overhead basking bulb on a thermostat — not a heat mat or heat rock.
Bearded dragons need a linear T5 HO UVB tube at 10.0 or 12% output, running the length of the basking third of the enclosure with nothing between bulb and dragon, replaced every 6–12 months regardless of whether it still produces visible light.
Bearded dragons should be kept at roughly 30–40% ambient humidity. Sustained humidity above 50% significantly raises the risk of respiratory infection in this dry-climate species — brief daily misting or a shallow soak handles hydration and shedding needs without pushing ambient humidity up long-term.