What kind of enclosure does a leopard gecko actually need?

A single adult leopard gecko does fine in a 20-gallon long tank, though many keepers now favor front-opening terrariums of similar footprint because top-opening tanks make geckos feel exposed to overhead threats. The enclosure should be longer than it is tall since leopard geckos are ground-dwelling and rarely climb, and floor space matters more than vertical height for a species that spends most of its time on or under cover rather than perched (Merck Veterinary Manual, 2024). Multiple hides are non-negotiable: one on the warm end, one on the cool end, and a humid hide filled with damp sphagnum moss to support shedding, since incomplete sheds around the toes and tail tip are one of the most common preventable problems in captive leopard geckos.

Substrate choice is where a lot of new owners go wrong. Loose sand, walnut shell, and calcium sand products are frequently marketed for leopard geckos but carry a documented risk of gastrointestinal impaction if ingested during feeding, particularly in juveniles and geckos with pre-existing parasites or dehydration (Association of Reptilian and Amphibian Veterinarians, 2021). Reptile-safe paper towel, non-adhesive shelf liner, or fine topsoil-sand blends packed firmly to reduce loose particles are lower-risk options recommended by most exotics veterinarians for pet owners rather than professional breeders.

How warm does a leopard gecko's tank need to be, and do they need UVB light?

Leopard geckos are ectotherms that regulate body temperature by moving between zones, so the enclosure needs a real gradient rather than one ambient setting. The warm side should sit around 88 to 92°F at the basking surface, ideally provided by an under-tank heat mat or radiant heat panel controlled by a thermostat, while the cool end can drop to the low-to-mid 70s, and nighttime temperatures shouldn't fall much below 65°F (Merck Veterinary Manual, 2024). Without a thermostat, heat mats can overheat and cause severe thermal burns, which are among the most common reptile emergency presentations exotics vets report.

UVB lighting was historically considered optional for leopard geckos because they're crepuscular and forage at dawn and dusk rather than basking in full sun, but current guidance from reptile veterinary specialists recommends providing a low-level UVB bulb (roughly 2.0 to 5.0 output) anyway, since even limited natural light exposure appears to support healthier vitamin D synthesis and may reduce reliance on dietary supplementation alone (Association of Reptilian and Amphibian Veterinarians, 2021). Bulbs should be replaced every 6 to 12 months regardless of whether they still produce visible light, since UVB output degrades well before the bulb burns out.

What should a leopard gecko eat, and how often?

Leopard geckos are strict insectivores, not omnivores, and their diet should center on gut-loaded crickets and dubia roaches as staples, with mealworms, waxworms, and silkworms offered as occasional variety rather than primary food, since fattier feeder insects fed too often are linked to obesity and fatty liver disease in captive geckos (Merck Veterinary Manual, 2024). Juveniles under a year old typically eat daily, offered as many appropriately sized insects as they'll consume in 10 to 15 minutes, while adults generally do well on feedings every other day to three times a week depending on body condition.

Calcium supplementation is the single most important nutritional detail. Feeder insects should be dusted with a calcium powder (without added vitamin D3 for most feedings, and with D3 once or twice weekly if UVB exposure is limited) every feeding for juveniles and gravid females, and at least a few times a week for adult males, because inadequate calcium relative to phosphorus is the direct cause of metabolic bone disease, a condition that causes soft, deformed bones and can leave geckos unable to walk (Association of Reptilian and Amphibian Veterinarians, 2021). A shallow dish of plain calcium carbonate powder left in the enclosure lets the gecko self-regulate additional intake.

How much humidity does a leopard gecko actually want?

Despite coming from arid regions of Afghanistan, Pakistan, Iran, and northwestern India, leopard geckos don't do well in a bone-dry tank either. Ambient humidity in the 30 to 40 percent range suits their general physiology, but the humid hide box — lined with damp moss or coco fiber — should maintain closer to 70 to 80 percent locally, since geckos seek that microclimate specifically during shedding cycles (Merck Veterinary Manual, 2024). A tank that's uniformly too dry leads to dysecdysis, where old skin fails to fully release, especially around toe joints and the tail tip, which can progress to tissue constriction and loss of digits if left unaddressed.

Checking the humid hide every few days and re-dampening the substrate as it dries out is a simple habit that prevents most shedding complications. Owners who notice retained shed despite a humid hide can also do a short soak in shallow lukewarm water, but chronic retained sheds that don't resolve with humidity fixes warrant a veterinary exam to rule out underlying illness or nutritional deficiency.

How can you tell if a leopard gecko is actually healthy?

A healthy leopard gecko has a plump tail — their tails store fat as an energy reserve, similar to a camel's hump, and a thin, shriveled tail is one of the clearest visual signs of poor body condition or illness (Merck Veterinary Manual, 2024). Clear, open eyes, steady weight gain in juveniles, firm and formed stool, and consistent appetite are the everyday markers owners should track, ideally with a simple weight log using a gram scale every few weeks since subtle weight loss is often the earliest sign something is wrong before behavior changes.

Leopard geckos can also voluntarily drop their tails as a predator-evasion response, called autotomy, if grabbed or severely stressed; the tail will regrow but usually shorter, less detailed in pattern, and with a bulbous appearance, and the stress of the event itself can suppress appetite for days afterward (Association of Reptilian and Amphibian Veterinarians, 2021). Rough handling or picking a gecko up by the tail is the most common preventable cause of this.

Can leopard geckos live together, and how should you handle one?

Leopard geckos are solitary and territorial by nature, and housing two males together reliably leads to fighting that can cause serious bite wounds and tail loss, so adult males should never share an enclosure (Merck Veterinary Manual, 2024). Females can sometimes cohabit with careful monitoring, but many exotics veterinarians still recommend individual housing to eliminate competition for food, basking spots, and hides, and to make it easier to track each animal's appetite and weight.

Handling should be brief and low to the ground for the first few weeks after bringing a new gecko home, letting it acclimate before regular handling begins, and sessions are best kept under 10 to 15 minutes to avoid overstressing an animal that's fundamentally more comfortable staying hidden than being carried around. Always support the body rather than gripping the tail, and wash hands before and after handling, since leopard geckos, like most reptiles, can carry Salmonella that poses a risk to young children, older adults, and people who are immunocompromised (Centers for Disease Control and Prevention, 2023).

How long do leopard geckos live, and what should new owners budget for long term?

With consistent temperatures, appropriate UVB exposure, and calcium-balanced feeding, leopard geckos commonly live 15 to 20 years in captivity, and some well-documented individuals have reached their late twenties, making them a genuine long-term commitment rather than a short-lived starter pet (Merck Veterinary Manual, 2024). That lifespan means the enclosure, heating equipment, and UVB bulbs will need periodic replacement over the years, and an annual or biannual wellness exam with a reptile-experienced veterinarian is worth budgeting for even in a gecko that looks outwardly fine, since early metabolic or parasitic issues are often silent until they're advanced.

New owners should plan for the ongoing cost of live feeder insects and gut-loading supplies, not just the one-time setup cost of the tank and heat equipment, since feeder quality directly affects the gecko's nutrition. Establishing a relationship with a veterinarian who sees reptiles before an emergency arises also matters, since not every general small-animal clinic is equipped to treat exotic species (Association of Reptilian and Amphibian Veterinarians, 2021).