What Nobody Tells You Before Getting a Leopard Gecko
When I picked up my first leopard gecko from a breeder at a local reptile expo, I thought I was fully prepared. I'd read a dozen care sheets, watched hours of YouTube videos, and set up what I was sure was the perfect enclosure. Within the first week, I'd already gotten three things wrong. The heat mat was too hot because I hadn't bought a thermostat (rookie mistake number one), the moist hide was bone dry because I didn't realize you need to re-moisten it every couple of days, and I was trying to handle my gecko way too soon.
That gecko, a super hypo tangerine female I named Mango, is still with me nine years later. She's healthy, she's thriving, and I've learned an enormous amount since those first stumbling weeks. This guide is everything I wish someone had handed me on day one.
Choosing Your Leopard Gecko
Before we talk about care, let's talk about picking the right animal. This matters more than most people think.
Buy captive-bred, always. Wild-caught leopard geckos are rare in the pet trade these days, but they do pop up occasionally. They're typically stressed, may carry parasites, and are harder to tame. Captive-bred geckos from reputable breeders are healthier, better socialized, and come with known genetics.
Check for signs of health. A healthy leopard gecko should have clear, bright eyes with no stuck shed around them. Its body should be plump but not bloated, with a thick tail that indicates good fat reserves. Watch it move, it should be alert and responsive, not lethargic. Check the vent area for any signs of impaction or discharge.
Age matters for beginners. I generally recommend starting with a juvenile that's at least 3-4 months old rather than a brand-new hatchling. Young babies are more fragile and less forgiving of husbandry mistakes. A slightly older juvenile gives you a bit more margin for error while still being young enough to tame easily.
The Enclosure: Your Gecko's Entire World
This is where you'll spend most of your setup budget, and where most mistakes happen. Let's break it down piece by piece.
Size and Type
The minimum enclosure size for a single adult leopard gecko is a 20-gallon long tank (30 x 12 x 12 inches). But honestly? Go bigger if you can. A 40-gallon breeder tank (36 x 18 x 17 inches) gives them significantly more space to explore, and makes it much easier to establish a proper temperature gradient from warm to cool.
Front-opening terrariums are better than top-opening tanks because you can approach your gecko from the front rather than reaching in from above. In the wild, threats come from above (birds of prey), so a hand descending from the top of the tank triggers their defensive instincts. Front-opening enclosures make taming faster and less stressful.
Substrate Options
This topic generates more heated debate in reptile forums than literally anything else. Here's what actually works:
Paper towel is the safest choice, particularly for juveniles. Zero impaction risk, easy to spot-clean, and you can instantly see if your gecko's droppings look healthy. It's not aesthetically exciting, but it's functional and vet-recommended.
Slate or ceramic tile is my go-to for permanent setups. It looks clean, conducts heat well from under-tank heaters, naturally files down your gecko's nails, and is incredibly easy to wipe down. I've used slate tile for the last seven years and I have zero complaints.
A 70/30 organic topsoil and play sand mix is popular among experienced keepers going for a naturalistic look. The soil prevents the sand from being loose enough to cause impaction in healthy adults. I'd only recommend this for well-established adult geckos who are eating and shedding normally.
What to avoid: Loose calcium sand, reptile carpet (harbors bacteria and can snag toenails), and wood chips or bark (too dusty and impaction-prone for ground-dwelling geckos).
Hides Are Non-Negotiable
Your leopard gecko needs a minimum of three hides, and this isn't optional, it's essential for their mental health:
- Warm hide positioned directly over the heat source. This is where your gecko will spend most of its time digesting food.
- Cool hide on the opposite end of the enclosure. Gives them a retreat when they need to cool down.
- Moist hide filled with damp sphagnum moss or paper towel. This assists with shedding and should maintain around 70-80% humidity inside. Place it on the warm side or center of the enclosure. Re-dampen the substrate inside every 2-3 days.
The hides should be snug. Leopard geckos feel secure when the hide walls and ceiling are close to their body. An oversized hide doesn't provide the same sense of safety. If you're using a commercially sold hide that seems too large, stuff some moss or paper towel inside to make it cozier.
Getting the Heat Right
Temperature management is the single most important aspect of leopard gecko care. These are ectotherms who depend entirely on external heat to regulate their metabolism, digest food, and maintain immune function. Get this wrong, and everything falls apart.
Target Temperatures
- Warm side floor surface: 88-92 degrees Fahrenheit (31-33 degrees Celsius)
- Cool side: 73-78 degrees Fahrenheit (23-26 degrees Celsius)
- Night temps: 65-75 degrees Fahrenheit (a natural nighttime drop is fine and actually beneficial)
Heating Equipment
An under-tank heater (UTH) connected to a proportional thermostat is the tried-and-true method. The thermostat probe goes directly on the substrate surface above the heat mat, not stuck to the glass, not floating in the air. You're measuring the temperature where your gecko actually sits, not the ambient air.
Without a thermostat, a UTH can easily exceed 110 degrees Fahrenheit. That will burn your gecko through the substrate. I cannot stress this enough: a thermostat is not optional. If your budget is tight, buy the thermostat before the heat mat. Prioritize it over everything else.
Overhead heating with deep heat projectors or halogen bulbs is gaining popularity and works excellently. These produce infrared heat that penetrates deeper into tissue, mimicking the sun's warming effect. They also need thermostatic control. Halogen flood bulbs on dimming thermostats are probably the single best heating option available right now.
Avoid heat rocks entirely. They create unpredictable hot spots and have caused countless thermal burns in reptiles.
Lighting and UVB
The old advice said leopard geckos don't need UVB because they're crepuscular. The new (and better-supported) advice says low-level UVB significantly benefits them by allowing natural vitamin D3 synthesis.
A shade-dwelling UVB bulb like the Arcadia ShadeDweller kit or a Zoo Med T5 HO 5.0 covering roughly one-third to one-half of the enclosure length is ideal. Run it on a timer for 10-12 hours daily. Make sure there are shaded areas beneath decor and hides so the gecko can self-regulate its exposure.
Even with UVB provided, I still recommend light calcium dusting with D3 once a week as a safety margin. Belt and suspenders.
Feeding Your Leopard Gecko
Leopard geckos are strict insectivores. They eat bugs and only bugs. Here's how to do it well.
Staple Feeders
Mealworms are the easiest feeder to keep. Store them in the fridge in bran and they'll last for weeks. Many geckos will eat them from a shallow dish, which means you don't have to deal with loose insects in the enclosure.
Dubia roaches are nutritionally superior, higher protein, lower fat, better calcium-to-phosphorus ratio. They don't smell, they don't make noise, and they can't climb smooth surfaces. The only downside is the psychological barrier of keeping roaches in your house, but once you get past that, they're objectively the best feeder.
Crickets are fine nutritionally but they're loud, smelly, and any left uneaten in the enclosure will nibble on your gecko while it sleeps. If you use crickets, remove any that aren't eaten within 15 minutes.
Treats (Occasional Only)
Waxworms are like candy to leopard geckos, high in fat and incredibly addictive. Some geckos will refuse all other food after being given too many waxworms. Use them sparingly, one or two per week at most, or save them for enticing a picky eater back onto food.
Superworms are fine as an occasional treat for adult geckos. They're large and high in fat, so limit them to once or twice a week.
Feeding Schedule and Portions
- Hatchlings to 6 months: Feed daily. Offer as many appropriately-sized insects as they'll eat in a 15-minute window.
- Juveniles 6-12 months: Feed every other day.
- Adults 12+ months: Feed 2-3 times per week. Obesity is a genuine health concern in captive leopard geckos. A fat tail is good; a fat belly dragging on the ground is not.
Feeder insects should be no longer than the space between your gecko's eyes. Insects that are too large can cause choking or impaction.
Shedding: The Part Everyone Worries About
Leopard geckos shed their entire skin in one piece and then eat it. Yes, they eat it. It's recycled nutrients and also an instinctive behavior to hide evidence of their presence from predators. You might never even see a shed if your gecko is healthy and your moist hide is doing its job.
Problems arise when humidity is too low. Stuck shed, especially around the toes and the tip of the tail, can constrict blood flow and cause tissue death. After every shed, check your gecko's feet carefully. If you see bands of retained skin around the toes, give them a 10-minute soak in lukewarm water (about half an inch deep) and gently work the skin off with a damp cotton swab.
A well-maintained moist hide prevents most shedding issues. Keep the moss or paper towel inside consistently damp, not soaking wet, just damp. Check it every couple of days.
Handling and Taming
When your gecko first comes home, give it a full week to settle in. No handling, no poking around in the enclosure unnecessarily, just fresh water and food offered at normal times. This adjustment period lets the gecko learn that its new environment is safe.
After a week, start with brief sessions. Place your hand flat in the enclosure and let the gecko approach you. Once it's comfortable walking over your hand, gently scoop it up from below. Never grab from above, that triggers a predator response.
Keep early sessions to 5-10 minutes. Increase gradually as the gecko shows comfort. Signs of stress include rapid tail wagging (a defensive warning), vocalizing (barking or squeaking), and frantic attempts to escape your hands. If you see any of these, calmly place the gecko back in its enclosure and try again another day.
Most leopard geckos become thoroughly tame within a few weeks of consistent, gentle handling. Mango now crawls onto my hand voluntarily when I open her enclosure. It took about three weeks of patient interaction to get there.
Common Health Issues to Watch For
Metabolic Bone Disease
Caused by insufficient calcium and vitamin D3. Symptoms include shaky legs, rubbery or deformed jaw, difficulty walking, and lethargy. This is entirely preventable with proper supplementation and UVB. If you catch it early, it's treatable with veterinary intervention. Advanced cases cause permanent skeletal damage.
Impaction
A blockage in the digestive tract, usually from ingesting loose substrate or oversized feeder insects. Watch for loss of appetite, a visibly swollen belly, and straining or inability to pass stool. Mild cases sometimes respond to warm baths and gentle belly rubs, but any case that doesn't resolve within 24-48 hours needs a vet.
Respiratory Infections
Caused by temperatures that are too low or sustained high humidity in the main enclosure. Symptoms include wheezing, mucus around the nostrils, open-mouth breathing, and lethargy. A respiratory infection requires antibiotic treatment from a reptile veterinarian.
Cryptosporidiosis
The most feared disease in leopard geckos. Crypto causes chronic weight loss, stick tail (severe tail thinning), regurgitation, and lethargy. It's highly contagious between reptiles and currently has no reliable cure. Quarantine any gecko showing these symptoms immediately and get a fecal test from your vet. This is why buying from reputable breeders matters: reducing your risk of bringing crypto into your collection.
Long-Term Care Tips From Someone Who's Been There
- Keep a simple log of feeding days, sheds, and weight. Weigh your gecko monthly on a kitchen scale. Gradual weight loss is much easier to catch in a log than by eye.
- Replace your UVB bulb every 6-12 months even if it still lights up. UV output degrades long before the visible light does.
- Deep-clean the enclosure monthly. Remove everything, sanitize with a reptile-safe disinfectant, and replace substrate.
- Don't house leopard geckos together. Despite what pet stores sometimes suggest, cohabitation causes stress, competition for resources, and can lead to serious injuries. One gecko per enclosure.
Leopard geckos are genuinely wonderful animals. They're quiet, clean, endlessly fascinating to watch, and they develop individual personalities that'll surprise you. Give them the right environment, feed them well, and you'll have a loyal little companion for the next two decades.