Caring for a Senior Leopard Gecko
What tends to change with age
A general reduction in activity level and metabolism is commonly reported in older geckos, similar to aging pets generally — this isn't automatically a health problem, but it's worth tracking rather than ignoring.
Weight and appetite monitoring
Continued regular weighing helps distinguish normal age-related slowing from an actual health decline — a senior gecko maintaining stable weight with a slightly reduced but steady appetite is generally fine, while ongoing weight loss warrants a vet check.
Accessibility adjustments
Making sure food and water are easy to reach, and that hides don't require significant climbing or awkward positioning, can help an older or less mobile gecko continue to access essentials comfortably.
More frequent check-ins
Many keepers move to slightly more frequent at-home health checks (mouth, vent, weight, mobility) for an older gecko, catching issues like MBD-related mobility changes or reproductive problems earlier.
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A single adult leopard gecko needs a 20-gallon long tank as an absolute minimum, with a 36x18 in (40-gallon breeder) footprint now considered the recommended standard — plus a secure lid, an under-tank heater on a thermostat, a thermal gradient, at least three hides, and a shallow water dish.
Set up in this order: substrate, then heat source wired through a thermostat, then hides and water dish, then decor — and run the whole enclosure for at least 24–48 hours to confirm stable temperatures before your gecko moves in.
Hatchlings can start in a 10-gallon tank or tub, juveniles do well in 20 gallons, and adults need a 20-gallon long as an absolute minimum — with 36x18 in (40-gallon breeder) now the widely recommended standard, not just an upgrade.
Heat a leopard gecko enclosure with an under-tank heater and/or overhead heat source (halogen or deep heat projector) wired through a thermostat — a thermostat is mandatory, not optional, and heat rocks should never be used.
Leopard geckos can survive without UVB using dietary D3 supplementation, but current husbandry guidance now recommends low-level UVB (roughly 2–6% T5) as best practice — it improves D3 synthesis, bone density, and natural behavior, and views on it have shifted significantly from older nocturnal-species advice.
Keep ambient humidity around 30–40% across most of the enclosure, with a dedicated humid hide raised to roughly 70–80% to support smooth, complete sheds.