📑 Table of Contents
The Most Popular Beginner Reptile — And the Most Misunderstood 🏠 Enclosure: 40 Gallons Minimum (Not 10) 🌡️ The Heat Gradient: Non-Negotiable 🍎 Diet: They Need Live Bugs (No Way Around It) ❌ The Sand Debate: Just Don't 💰 Realistic Setup CostsThe Most Popular Beginner Reptile — And the Most Misunderstood
Leopard geckos have been the #1 pet reptile for over 20 years. They're docile, cute, and relatively hardy. But 'hardy' doesn't mean 'care-free.' The r/leopardgeckos subreddit sees dozens of help posts daily from owners whose geckos have metabolic bone disease, stuck shed, or impaction — all preventable with proper care.
r/leopardgeckos moderator: "If I had a dollar for every 'my gecko hasn't eaten in 2 weeks on sand substrate' post, I could retire. The pet store gave you bad advice. Almost all of it."
🏠 Enclosure: 40 Gallons Minimum (Not 10)
Pet stores sell 10-gallon 'leopard gecko kits.' These are too small. The minimum accepted enclosure size in 2026 is 40 gallons (36x18x16) for an adult. Here's why and what you need:
- Space for thermal gradient: Cool side (75°F) → warm side (88-92°F) → you can't create this in a 10-gallon
- Multiple hides: Minimum 3 — cool hide, warm hide, humid hide (for shedding)
- Floor space matters: Leos are terrestrial, they need horizontal room, not vertical
- Loose substrate debate: Paper towel or slate tile for beginners. Sand causes impaction — see below
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🌡️ The Heat Gradient: Non-Negotiable
Leopard geckos are ectotherms — they can't regulate their own body temperature. They need a gradient so they can choose their temperature. This is the single most important aspect of their care.
- Warm side: 88-92°F (31-33°C) on the floor surface — use a digital probe thermometer
- Cool side: 75-80°F (24-27°C)
- Nighttime: Can drop to 70°F — no heat source needed at night (they're from desert regions that cool significantly at night)
- Heat source: Under-tank heater (UTH) with a thermostat. The thermostat is NOT optional — unregulated UTHs can reach 120°F and burn your gecko
🍎 Diet: They Need Live Bugs (No Way Around It)
Unlike crested geckos, leopard geckos require live insects. There is no commercial diet powder that replaces this. If you're not comfortable handling bugs, a leo is not the right pet for you.
- Staple feeders: Dubia roaches (best), crickets (OK), black soldier fly larvae (good for variety)
- Occasional treats: Mealworms (high fat, hard to digest), waxworms (junk food — very addictive), hornworms (hydrating)
- Feeding schedule: Juveniles daily, adults every 2-3 days
- Supplements: Calcium without D3 at every feeding. Calcium with D3 and multivitamin 1-2x per week
- Gut loading: Feed your insects nutritious food 12-24 hours before feeding them to your gecko
Reptile nutritionist Dr. Francis Leiber: "The #1 health issue I see in leopard geckos is metabolic bone disease from inadequate calcium supplementation. It's completely preventable with a $5 jar of calcium powder and 30 seconds per feeding."
❌ The Sand Debate: Just Don't
Calcium sand, play sand, 'desert sand' — the pet store will try to sell you all of it. Don't buy it. Leopard geckos lick their environment to explore, and sand particles accumulate in their gut causing impaction (fatal intestinal blockage).
- Safe substrates: Slate tile (best — conducts heat well, easy to clean), paper towel (cheapest, best for monitoring health), non-adhesive shelf liner
- Risky substrates: Coconut coir (can cause impaction if ingested), reptile carpet (teeth and claws get caught)
- Dangerous substrates: Any sand, wood chips, bark, gravel
💰 Realistic Setup Costs
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Frequently Asked Questions
❓ How often do leopard geckos shed?
Adults shed every 4-8 weeks. Juveniles shed more frequently (every 1-2 weeks) as they grow. The humid hide is critical — without it, shed gets stuck on toes and can cut off circulation, leading to lost digits.
❓ Why is my leopard gecko not eating?
During shedding (1-2 days before and after), geckos often refuse food — this is normal. If it's been more than 2 weeks with no food (adults), check: temperature (too cold = slow metabolism), husbandry changes, and look for signs of impaction. Consult a reptile vet if concerned.
❓ Can leopard geckos live together?
No. They're solitary and territorial. Cohabitation leads to stress, fighting, and resource competition (one gecko gets all the food). Even two females can bully each other. House them separately.
❓ Do leopard geckos need light at night?
No. They need a natural day/night cycle. Any light at night disrupts their circadian rhythm. If you need to check on them at night, use a dim red light briefly — they can barely see red wavelengths.