Best Diet for Leopard Geckos: Complete Feeding Guide

Leopard geckos do best on a varied live-insect diet, not fruits, vegetables, pellets, or wild-caught bugs. Reliable staples include crickets, dubia roaches, mealworms, silkworms, and sometimes calciworms or hornworms. Variety matters because no single feeder insect provides ideal nutrition on its own. Wild-caught insects are not a safe substitute because they may carry parasites, pesticides, or toxins.

Before feeding, insects should be gut-loaded with a nutritious diet so they pass better nutrition on to your gecko. Veterinary sources recommend gut loading for at least several hours, and some reptile references suggest up to 24-72 hours depending on the feeder and gut-load method. In practical home care, many pet parents feed insects a quality commercial gut-load plus leafy greens and vegetables before offering them.

Supplements are also part of a complete leopard gecko diet. Most geckos need feeder insects dusted with phosphorus-free calcium, plus a reptile multivitamin on a regular schedule. Some care plans use calcium with vitamin D3 at certain feedings and calcium without D3 at others, especially depending on lighting and husbandry. Because supplement needs can change with age, UVB setup, breeding status, and health history, it is smart to review your exact schedule with your vet.

Fresh water should always be available in a shallow dish, and uneaten live insects should be removed after feeding. Crickets and other loose feeders can stress or injure a gecko if left in the enclosure too long.

A safe feeding amount depends on your leopard gecko's age, body condition, activity level, and feeder type. As a general rule, offer insects that are no wider than the space between your gecko's eyes. Young geckos usually need more frequent meals because they are still growing. Adults often do well eating every other day or 2-3 times weekly.

Many pet parents use a timed feeding session rather than a fixed insect count. Offer one or two insects at a time for about 10-15 minutes, then remove leftovers. Others use a rough count, such as several appropriately sized insects per meal, then adjust based on body condition and appetite. Mealworms and dubia roaches are often more calorie-dense than crickets, so the same number of insects may not equal the same nutrition.

Treat insects should stay limited. Waxworms, butterworms, and frequent superworms are higher in fat and can push some geckos toward obesity or picky eating. If your gecko starts refusing balanced staples and only wants fatty treats, it is time to reset the menu and talk with your vet.

For budgeting, one healthy adult leopard gecko often costs about $10-$35 per month for feeders and supplements in the U.S. A simple routine with crickets or mealworms may stay near the lower end, while a more varied plan with dubia roaches, silkworms, and multiple supplements is often higher.

Poor diet or poor supplementation can show up slowly at first. Watch for weight loss, a thinning tail, weak appetite, trouble shedding, low energy, constipation, or repeated refusal of staple insects. A leopard gecko that only wants fatty treats may not be getting a balanced diet, even if it still seems eager to eat.

More serious nutrition-related problems can include soft or swollen jaw bones, tremors, limb weakness, bowed legs, difficulty walking, or fractures, which may point to metabolic bone disease. This condition is linked to problems with calcium, phosphorus, vitamin D3, and husbandry. Eye issues, mouth inflammation, and poor growth can also happen when the diet lacks variety or vitamin support.

See your vet promptly if your gecko stops eating for more than a few days outside of a normal seasonal slowdown, loses weight, cannot catch prey, or seems painful when moving. See your vet immediately for shaking, collapse, severe weakness, visible bone deformity, black stool, or signs of impaction such as straining with no stool and a swollen belly.

A reptile-experienced exam often falls around $70-$200, with fecal testing commonly adding about $15-$50. If your vet suspects metabolic bone disease or another internal problem, imaging and additional testing can raise the total cost range.

If your current feeding routine relies on one insect only, a safer alternative is to build a rotating staple menu. Crickets and dubia roaches are common staples, while mealworms can work well when gut-loaded and fed in balance with other insects. Silkworms, calciworms, and occasional hornworms can add variety and hydration.

If your gecko is a picky eater, try changing one variable at a time. Offer feeders at dusk, use feeding tongs, warm the room to an appropriate reptile-safe range, or switch insect movement style. Some geckos respond better to roaches than crickets, while others prefer worms in a dish. The goal is not one perfect feeder. It is a practical, balanced plan your gecko will reliably eat.

If live insects are difficult for your household, talk with your vet before trying freeze-dried or prepared diets. For leopard geckos, these products usually do not replace a varied live-insect diet well. They may be less nutritious, less stimulating, and less accepted by many geckos.

A safer long-term plan usually includes three basics: varied live feeders, consistent gut loading, and a supplement schedule matched to your enclosure and lighting. If you are unsure whether your gecko is too thin, overweight, or getting the right calcium support, your vet can help tailor a feeding plan to your pet and your budget.