Leopard geckos should not eat fruit. They are obligate insectivores, meaning their digestive systems are designed to process animal-based protein from insects, not plant matter or sugars found in fruit.

Unlike crested geckos or blue tongue skinks, leopard geckos lack the specialized gut flora and longer intestinal structures needed to break down plant fiber and fructose efficiently. Offering fruit can lead to digestive upset including diarrhea, bloating, and bacterial imbalances in the gut. The high sugar content in fruit can also contribute to obesity over time if offered repeatedly.

A proper leopard gecko diet consists of appropriately sized, gut-loaded insects. Staple feeders include dubia roaches, crickets, and black soldier fly larvae (nutrigrubs). Mealworms and superworms make acceptable additions but are higher in fat and chitin. Waxworms and butterworms should be reserved as occasional treats due to their high fat content.

Calcium supplementation is essential. Dust feeder insects with a plain calcium powder at most feedings and use a calcium-with-D3 supplement once or twice per week if the gecko does not have access to quality UVB lighting. A small dish of plain calcium powder left in the enclosure allows the gecko to self-regulate intake.

A multivitamin powder should be dusted on feeders once every one to two weeks to cover trace nutrients like vitamin A (retinol form is preferred over beta-carotene for leopard geckos, though this is debated; consult your vet).

If your leopard gecko shows interest in licking fruit, it is likely attracted to the moisture or scent rather than seeking plant nutrition. Offer a shallow water dish or occasional misting instead. Always consult a reptile veterinarian before introducing any non-insect food item to a leopard gecko's diet.