Leopard Gecko Care: Diet, Tank Setup, Lifespan, Size…

Leopard geckos (Eublepharis macularius) are one of the most widely kept pet reptiles in the world, and for good reason. I have kept Geek for years and she remains one of the most personable, low-drama lizards I have worked with. That said, there are a handful of care requirements that beginner guides often get wrong. This guide covers everything accurately: enclosure size, temperature setup, UVB, diet, supplements, and health issues, so you can set your gecko up well from day one.

Species Summary

In the wild, leopard geckos inhabit the rocky scrublands of Afghanistan, Pakistan, northwest India, and Iran. They live in a semi-arid environment with pronounced temperature differences between day and night, which is why replicating a proper temperature gradient in captivity matters more than many beginners realise.

Leopard Gecko Lifespan

With proper care, leopard geckos routinely live 15 to 20 years in captivity. Some individuals reach 25 years or beyond. They are genuinely long-lived animals, and acquiring one is more of a decade-plus commitment than most new keepers expect.

The main factors that shorten lifespan are poor temperature management, incorrect diet, inadequate calcium supplementation, and chronic low humidity. None of these are difficult to get right, but all of them matter. For how much a leopard gecko costs before you commit, see our leopard gecko price guide.

Appearance and Colours

The species name is straightforward. Leopard geckos are covered in dark spots on a yellow or tan base, with a pale white belly. The pattern varies considerably between individuals, and selective breeding has produced dozens of established colour morphs: albino lines, high-yellow, tangerine, patternless, blizzard, and many more. These morphs are widely available and are part of why the species has become so dominant in the reptile hobby.

Unlike most gecko species, leopard geckos do not have adhesive toe pads and cannot climb smooth vertical surfaces. They are a fully terrestrial species. They also have functional eyelids, a feature that sets the Eublepharidae family apart from most other geckos, which have fixed transparent scales over their eyes instead.

Average Size

Adults typically reach 7 to 10 inches in total length. Males tend to be larger and heavier than females, often reaching the upper end of that range. Giant morphs can exceed 10 inches and reach close to a foot in length. For a full breakdown of growth rates and size by age, see our guide on how big leopard geckos get.

Enclosure and Tank Size

The minimum enclosure for a single adult leopard gecko is a 20-gallon long (30 x 12 x 12 inches). A 10-gallon tank is too small for an adult and will make it harder to create an adequate temperature gradient. A 40-gallon breeder (36 x 18 x 18 inches) is the better choice and gives the gecko room to thermoregulate comfortably while still feeling secure.

Focus on floor space rather than height. Leopard geckos are terrestrial and do not use vertical space the way arboreal species do. A wider enclosure makes the temperature gradient easier to manage and gives the gecko more usable ground to cover.

Expert Tip: A glass terrarium with a secure mesh lid is the standard setup. Front-opening vivariums work well too and make daily access easier without having to reach in from above, which can stress some geckos. Whatever enclosure you use, make sure the lid locks. Leopard geckos are better escape artists than their slow reputation suggests.

Habitat Setup

The basic requirements are straightforward: a safe substrate, a temperature gradient with hides at each end, and a humid hide for shedding support.

Substrate: reptile carpet, coconut fibre, and paper towels all work well. Loose sand is not recommended for juveniles and should be used with caution for adults. Impaction risk is real, particularly with fine-grain sands. If using a bioactive or naturalistic setup, a mix of topsoil and play sand compacted firmly works better than loose sand. Avoid cedar shavings or any strongly scented wood substrate.

Hides: provide at least three. One on the warm side, one on the cool side, and one moist hide (a plastic hide box with damp sphagnum moss inside) positioned on the warm side. The humid hide is not optional; it is the single most important thing you can do to prevent shedding problems. Geek uses hers almost every shed cycle without fail.

Decor: rocks, cork bark, and artificial plants all work as enrichment. Leopard geckos are naturally curious and will investigate and use additional hides and structure. Climbing branches are not necessary but some individuals do use low-level structures.

Temperature and Lighting

Leopard geckos are crepuscular, most active at dusk and dawn, and they thermoregulate by moving between areas of different temperature throughout the enclosure. Getting the gradient right is one of the most important aspects of setup.

• Warm side / basking area: 88–92°F surface temperature
• Ambient cool side: 72–77°F
• Nighttime: no lower than 65–68°F. A ceramic heat emitter or deep heat projector can maintain this without producing light

Use an under-tank heat mat connected to a thermostat on the warm side as the primary heat source, or a low-wattage basking bulb with a thermostat. Always verify temperatures with a digital probe thermometer rather than the ambient room temperature. For more detail on heating options, see our guide on whether leopard geckos need a heat lamp and our night temperature guide.

UVB lighting: UVB is strongly recommended for leopard geckos. While older guidance treated it as optional, current research on reptile physiology supports the benefits of low-level UVB exposure for calcium metabolism and overall health, even for crepuscular species. A low-output UVB tube (5–6% or T8 5.0) run on a 10–12 hour cycle provides meaningful benefit. See our full guide on whether leopard geckos need UVB for the evidence and setup recommendations.

Humidity

Ambient humidity in the main enclosure should stay between 30 and 40 percent. Leopard geckos come from arid environments and do not tolerate persistent high humidity. Respiratory infections are a real risk if the enclosure stays above 50 percent long-term.

The exception is the humid hide, which should be kept at much higher humidity (70–80%) using damp sphagnum moss. This gives the gecko access to moisture when it needs it (during pre-shed and for drinking) without making the whole enclosure damp. Monitor ambient humidity with a digital hygrometer and adjust ventilation if levels run consistently high.

Water

Keep a shallow water dish in the cool end of the enclosure at all times. Leopard geckos drink more than many keepers expect, particularly in warmer months or after shedding. Change the water daily and clean the dish regularly. A dirty water dish is a quick route to bacterial contamination.

Food and Diet

Leopard geckos are strict insectivores. Their diet should consist entirely of live insects. No fruit, vegetables, or plant matter. The full breakdown of feeder insects, prey sizing, gut-loading, and supplements is in our dedicated leopard gecko diet guide. The key points for a care guide overview:

Best staple feeders: dubia roaches and crickets. Dubia roaches have a better nutritional profile, are quiet, easy to store, and most geckos take them readily. Crickets are widely available and provide movement stimulation. Mealworms are acceptable as a secondary staple but should not be the sole feeder due to their higher fat content.

Treat feeders (occasional only): waxworms, hornworms, and silkworms. Waxworms are very high in fat and highly addictive. Limit to once or twice per month.

Gut-load all feeders for 24–48 hours before offering. The nutritional value of an insect reflects what it has recently eaten.

Supplements: dust feeders with plain calcium powder at most meals, calcium with D3 once weekly, and a multivitamin once weekly. Leave a small dish of plain calcium powder in the enclosure for self-supplementation.

Feeding frequency: juveniles daily, adults every two to three days. Feed in the evening to align with their natural crepuscular activity.

Expert Tip: Monitor tail thickness as a body condition indicator. A healthy adult should have a moderately plump tail. A very thin tail suggests underfeeding or illness. Armpit fat bubbles in adults indicate overfeeding, common in geckos receiving too many waxworms or mealworms.

Possible Health Issues

Metabolic bone disease (MBD) is the most serious diet-related health problem. It results from insufficient calcium or inadequate D3 for calcium absorption. Signs include weakness, tremors, rubbery jaw, and skeletal deformities. Preventable with consistent calcium supplementation and UVB access.

Dysecdysis (stuck shed) is a direct consequence of inadequate humidity or a missing humid hide. Retained shed on the toes is particularly dangerous. It constricts blood flow and can cause digit loss. Address stuck shed promptly with a warm soak and gentle assistance. Our shedding guide covers the full process.

Obesity and fatty liver disease develop from overfeeding, particularly with high-fat feeders. Monitor tail and body condition regularly and adjust feeding frequency if the gecko is gaining excess weight.

Respiratory infections result from excessive humidity or temperatures that are too cold. Signs include wheezing, mucus, and lethargy. Requires veterinary treatment.

Tail drop is a stress response. Leopard geckos can voluntarily drop their tails when threatened. The tail regrows but never fully replicates the original. See our tail drop guide for what to do if this happens. For a full rundown of warning signs, see our guide on signs your leopard gecko is sick or dying.

Behaviour and Temperament

Leopard geckos are crepuscular, sheltering in hides during the day and becoming active around dusk. Most individuals are docile and handleable once they have settled in. They communicate through squeaks and chirps. You may hear Geek vocalise when she is hungry or disturbed, which never stops being a charming thing about the species.

Males are territorial and must not be housed together. They will fight. Female groups can coexist in a large enough enclosure, though individual personalities vary and any pairing should be monitored for signs of competition over resources. For a full breakdown of what works, see our guide on whether leopard geckos can live together.

When two males encounter each other, the warning signs are tail rattling (similar to a rattlesnake) and slow tail waving. Separate them immediately if either behaviour is observed.

Handling Tips

Leopard geckos are one of the more handleable reptile species. Biting is rare and usually only occurs when the gecko is startled or mishandled. Give a newly acquired gecko two to three weeks to settle in before attempting regular handling. Let it get comfortable with its enclosure and your scent first.

Keep early sessions short (five to ten minutes) and build duration gradually as the gecko relaxes. Watch for signs of stress (rapid breathing, trying to escape, tail waving) and return the gecko to its enclosure if any of these appear. Most leopard geckos become comfortable with regular handling within a few weeks. For more on the handling process, see our guide on whether leopard geckos like being held.

Avoid handling within 24 hours of feeding to reduce regurgitation risk, and never handle during or immediately after a shed.