Bearded Dragon Feeding: Schedule, Diet, and Why They Stop Eating

A bearded dragon's diet changes as it grows up, and not only in amount: what belongs on the plate shifts too. Here's how that shift works, and how to read a dragon that's gone off food.

Feeding Schedule by Age

• Hatchlings (under about 1 month): 2 to 3 times daily per veterinary sources, mostly flightless fruit flies and gut-loaded pinhead crickets. Enthusiast sites cite 3 to 5 feedings a day, more granular but not vet-sourced.
• 1 to 4 months: Twice daily, insects plus vegetables introduced.
• Juveniles (roughly 4 to 18 months): Once daily, crickets and worms alongside salad every other day, or once to twice daily per broader veterinary phrasing.
• Adults (18+ months): Once daily or every other day, roughly every 24 to 72 hours, since growth has stopped and metabolism has slowed. Insects a few times a week, greens daily.

As an ectotherm, how much a dragon can actually eat also depends on temperature, only feed when basking temperatures are in the correct range (the tank setup guide has the targets), digestion depends on it.

What Bearded Dragons Eat

The ratio flips with age: juveniles eat mostly insects, adults eat mostly plant matter, and it mirrors a real dietary shift documented in wild bearded dragons too, not an arbitrary husbandry rule.

Insects: calcium-dusted crickets, dubia roaches, black soldier fly larvae, silkworms, and hornworms as regular staples. Mealworms and superworms are fine occasionally but shouldn't be daily, they're fatty and their hard exoskeletons can contribute to tooth wear. Waxworms are treat-only. Insects should be no larger than the space between the dragon's eyes to avoid choking, impaction, and tooth damage. Never feed wild-caught insects or fireflies.

Gut-loading and dusting matter as much as the insect choice itself. Gut-load feeder insects on a calcium-rich diet for a day or two before offering them, then dust with plain calcium powder, daily on food is common guidance, with calcium plus D3 a couple times a week. By age, that works out to plain calcium near-daily for juveniles and 2 to 3 times a week for adults, with a multivitamin once or twice a week. Dusting doesn't replace gut-loading, they're both necessary. UVB lighting is essential too, without it a dragon can't actually use the calcium it's getting. Use feeding tongs for control and to keep insects from burrowing into substrate.

Vegetables and greens should make up the majority of plant matter: collard greens, mustard greens, turnip greens, dandelion greens, watercress, bell peppers, green beans, squash, and carrots are good staples. Feed spinach, Swiss chard, and beet greens sparingly, they contain oxalates that bind calcium, and rotate in cabbage and kale carefully too. Skip iceberg lettuce and celery, not toxic, just nutritionally empty. Fruit is a minor treat, capped around 5 to 10% of the diet. Larger adult females may occasionally get a pinky mouse, mainly during reproductive cycles, not as routine food.

Foods to Avoid

Avocado, which contains persin, a compound with documented toxicity in birds and a range of mammals and no established safety margin in reptiles, rhubarb especially the leaves, onion, garlic, leeks, and chives, and any wild-caught insects, fireflies specifically are potentially lethal even in small amounts. Dog food, cat food, raw meat, rabbit food, and eggs are all inappropriate despite occasionally being suggested online, they're nutritionally unbalanced for this species. Citrus causes digestive irritation, and insects noticeably wider than the space between the dragon's eyes are a real choking and impaction risk.

Why Bearded Dragons Stop Eating

1. Brumation. A seasonal dormancy most captive dragons can enter, typically starting between 1 and 3 years old, commonly lasting 1 to 3 months. Appetite often spikes first, then drops until the dragon mostly rests in its hide.
2. Shedding. Makes dragons itchy and uncomfortable, commonly paired with a temporary appetite drop and more lethargy around the shed.
3. Gravidity. Female dragons can produce infertile egg clutches without a male present. Many eat voraciously during early follicle development, then go off food substantially in the 1 to 2 weeks before laying.
4. Stress. A new environment, an enclosure that's too small, cohabitation with another dragon, or overhandling can suppress appetite.
5. A basking temperature that's too low. As an ectotherm, a dragon needs correct heat to produce stomach acid and digestive enzymes. Too cold, and appetite wanes while digestion slows or stalls, which can also contribute to impaction.
6. Impaction. A blockage from oversized insects, loose substrate ingestion, or slowed cold-temperature digestion, often paired with reduced or absent stool and straining.
7. Illness, parasites, or metabolic bone disease. Usually accompanied by other symptoms like lethargy, abnormal stool, or visible weakness or deformity.
8. Picky phases. Dragons can simply go off a food they're bored with. Worth ruling out before assuming illness.

When to Worry

There's a real tension in the sourcing here worth stating plainly. One veterinary teaching hospital treats refusing food for 1 to 2 or more days as a reason to seek care in adults, while a separate DVM-reviewed source says healthy adults can physiologically fast 1 to 2 weeks without real concern. Both can be true, a short refusal is worth watching closely, while true fasting tolerance runs longer than that watch-window suggests. Babies and juveniles have far less room to wait either way, don't let one go more than about 2 to 3 days without food given their rapid growth.

During confirmed brumation, not eating for 1 to 4 months is expected, but consult a vet if it extends past roughly 3.5 months or the dragon loses more than about 10% of its starting body weight. Regardless of day count, seek care for lethargy, stopped or abnormal stool, a swollen abdomen, visible straining, sunken eyes, unexplained weight loss, hind-limb weakness, or a persistent black-beard stress display. After brumation ends, appetite should return within 2 to 3 weeks, if it doesn't, that's worth a vet visit too.

A cricket is mostly a container for whatever it ate last, so the gut-loading feeder insects guide covers what to feed feeders and how that interacts with calcium dusting.

Sources & Further Reading