Bearded dragon care: enclosure, lighting, diet and health

Bearded dragons (Pogona vitticeps) are among the most popular pet lizards in the United States because they are calm, active during the day and tolerate handling well. They are also a long commitment: VCA Animal Hospitals notes adults can reach 18–22 inches and live about 7–12 years in captivity with good care. Most health problems in pet dragons trace back to husbandry — heat, light, diet and hygiene — so getting the setup right is the biggest favor you can do for your lizard. This guide is part of our reptile care library.

What size enclosure does a bearded dragon need?

According to VCA’s bearded dragon housing guide, a juvenile can start in about a 20-gallon tank, but adults need 60–100 gallons. A useful rule is that the enclosure should be at least three times the lizard’s body length, with a secure, ventilated top. Many keepers skip the juvenile tank entirely and buy the adult enclosure first, which saves money and avoids stressful moves.

Life stage	Approximate length	Suggested enclosure (VCA)
Hatchling/juvenile	Under 10 inches	About 20 gallons
Subadult	10–16 inches	40–60 gallons
Adult	18–22 inches	60–100 gallons

Only one adult male should live in an enclosure, since adult males often fight. Honestly, most dragons do best housed alone; they do not need company, and cohabitation often leads to one animal dominating food and the basking spot.

Substrate and furnishings

VCA prefers paper-based bedding or reptile carpet and advises against sand, gravel, wood shavings, corn cob, walnut shells, cat litter and calcium sand because they can cause intestinal impaction. Cedar is toxic to reptiles. Add a sturdy basking platform (a flat rock or branch), a hide on the cool side and a shallow, heavy water dish. The Merck Veterinary Manual’s owner guide on providing a home for a reptile stresses that hides and decor reduce stress and that the habitat should be fully ready before the animal arrives.

What temperatures and lighting do bearded dragons need?

Reptiles are ectotherms: they rely on outside heat to digest food, fight infection and stay active. Your job is to build a thermal gradient, a hot end and a cool end, so the dragon can move between them.

Zone	Target (VCA)	How to check
Basking spot	About 90–100°F	Infrared thermometer at the basking surface
Cool end	About 75–80°F	Digital probe thermometer at floor level
Night	Lower than daytime; lights off	Probe thermometer

VCA warns against heated “hot rocks,” which can cause burns. Use an overhead basking bulb instead. The Merck Veterinary Manual’s reptile housing table gives general reference points for reptile keepers: a 50–75 watt basking light placed at least 18 inches from the basking area, a photoperiod of about 10 hours in winter to 14 hours in summer for subtropical and tropical species, and UV in the 290–320 nanometer (UVB) range.

UVB is not optional

UVB light lets a dragon make vitamin D3 in its skin, which it needs to absorb calcium. VCA says the UVB source must be within about 6–18 inches of the animal with nothing in between, because ordinary glass and plastic block UVB. Replace the bulb roughly every six months even if it still glows, since UV output fades before visible light does. A simple timer keeps the day length consistent.

What do bearded dragons eat?

VCA’s feeding guide describes a diet of about 50% plant matter and 50% insects. Leafy greens should make up most of the plant portion, and fruit should be only 10–20% of it, offered as a treat. Juveniles eat more insects and eat more often; VCA notes adults may eat only every 24–72 hours.

Food group	Examples	Notes
Leafy greens (staple)	Collard, mustard and turnip greens, dandelion greens	Chop finely; offer fresh daily
Other vegetables	Squash, bell pepper, green beans	Grated or diced
Insects	Crickets, dubia roaches, black soldier fly larvae	Gut-load before feeding; size smaller than the space between the eyes
Fruit (treat)	Berries, papaya, mango	Keep to about 10–20% of the plant portion

Calcium and vitamins

VCA recommends dusting food with a phosphorus-free calcium powder daily and a vitamin D3 supplement two to three times a week. Ask your veterinarian to tailor this to your dragon’s age, since growing juveniles and laying females have different needs, and over-supplementing is possible.

Water

Keep fresh water in a shallow dish that will not tip and change it daily. VCA notes that many dragons do not recognize standing water, so gentle misting and occasional warm soaks help keep them hydrated.

How do you keep a bearded dragon healthy?

VCA recommends an exam by a reptile-savvy veterinarian within 48 hours of purchase, including a fecal test for parasites, and yearly checkups after that. The Association of Reptile and Amphibian Veterinarians (ARAV) maintains a directory that can help you find one. Common problems VCA lists include:

• Metabolic bone disease — soft jaw, swollen limbs, tremors; usually from missing UVB or calcium.
• Mouth rot (infectious stomatitis) — swelling, redness or discharge in the mouth.
• Respiratory infections — wheezing, open-mouth breathing, bubbles at the nose.
• Tail rot — darkened, dry tail tip, often after an injury.
• Impaction — from loose substrate or oversized insects.

Seasonal brumation is a natural slowdown in many adult dragons, but VCA cautions that it can mask illness. Get a checkup before assuming a quiet, non-eating dragon is simply brumating.

How do you clean the enclosure and handle a dragon safely?

Spot-clean droppings and uneaten food daily. The Merck owner guide advises removing waste regularly, disinfecting tools between enclosures and replacing substrate at least monthly. Ask your vet which disinfectant and dilution is safe.

Bearded dragons, like all reptiles, can carry Salmonella without looking sick. The CDC’s reptile and amphibian guidance says to wash hands with soap and running water after handling the lizard, its food or its habitat, and not to clean equipment in the kitchen sink. CDC advises that children under 5, adults 65 and older and people with weakened immune systems are at higher risk, and that children under 5 should not handle reptiles or their environments.

To pick up a dragon, slide a hand under its chest and support the hind legs and tail; never grab the tail.

Troubleshooting common bearded dragon problems

Your dragon stopped eating. Check the basking spot temperature and the age of the UVB bulb first. Shedding, a new environment and seasonal slowdowns can also reduce appetite, but weight loss or lethargy needs a vet.

Black beard. A darkened beard can mean stress, feeling threatened, territorial behavior or illness. Look for a cause such as another reptile in view, a cold enclosure or recent changes.

Glass surfing. Running against the glass may point to an enclosure that is too small, a reflection or temperatures that are off.

Twitching, a soft jaw or trouble walking. These can be signs of metabolic bone disease. Review your UVB setup and calcium dusting, and see a reptile vet.

Runny stools or no droppings. Diet, hydration and temperature all affect digestion. Persistent changes, or a dragon that has not passed stool and seems bloated, need a vet exam.

Bearded dragon care checklist

Frequency	Task
Daily	Fresh greens and water, spot-clean, check temperatures, calcium dusting
A few times a week	Insect feedings (more often for juveniles), vitamin D3 as advised
Monthly	Replace or deep-clean substrate and decor
Every 6 months	Replace UVB bulb
Yearly	Veterinary exam and fecal test

How much does it cost to keep a bearded dragon?

The lizard itself is often the cheapest part. Expect most of your first-year spending to go to the enclosure, a quality UVB fixture and bulb, a basking lamp with a dimming thermostat or timer, thermometers, decor and the first veterinary visit. Ongoing costs are mainly live insects, fresh greens, supplements, replacement UVB bulbs and annual checkups. Budget for a possible emergency visit too: reptile medicine often involves radiographs and bloodwork, and exotic-animal clinics may charge more than general practices.

Common beginner mistakes to avoid

• Measuring air temperature instead of the basking surface. The dragon sits on the rock, so measure there.
• Running UVB through a screen or glass lid without adjusting distance. Screens reduce UVB output; follow the bulb maker’s distance guidance and VCA’s 6–18 inch range.
• Feeding mostly insects to adults. Adults that eat too many fatty insects gain weight; greens should be offered daily.
• Oversized prey. Insects should be smaller than the space between the dragon’s eyes.
• Skipping quarantine. Keep any new reptile separate from others for several weeks and see a vet before introducing it to your collection.

Is a bearded dragon the right reptile for you?

Dragons suit owners who want an interactive, daytime lizard and have space for a large enclosure. If you prefer a smaller, nocturnal lizard that does not need as much UVB infrastructure, read our leopard gecko care guide. For a low-activity pet that eats infrequently, see ball python care, and for a long-lived grazer that can live outdoors part of the year, see tortoise care. If you are also thinking about a career with animals, our guide on what a veterinary assistant does covers exotic-pet clinics too.

Whatever you choose, set up and test the habitat first, then bring the animal home.