Feeding Guide · Reptiles

What Do Reptiles Eat? A Complete Feeder Guide

Crickets, dubia roaches, frozen mice, hornworms — which feeders your reptile needs, how often, and what it costs each month.

Reptile nutrition is more complex than it first appears. The species, age, and individual animal all determine what should be fed — and getting it wrong leads to nutritional deficiencies, impaction, and shortened lifespans. Here's the practical guide.

The Main Feeder Types

FeederBest ForNutrition ProfileCost (online, per 100)
Dubia RoachesMost insectivores; ideal stapleHigh protein, moderate fat, good calcium ratio$12–$20
CricketsWide variety of species; good variety feederGood protein; gut-load dependent$6–$12
MealwormsOccasional treat; older leos and skinksHigh fat; poor calcium:phosphorus ratio$5–$10
SuperwormsLarger reptiles; adult beardies, monitorsHigh fat; good for weight gain$8–$15
HornwormsHydration; picky eaters; treatHigh moisture, low fat — excellent hydration feeder$15–$30 (per cup)
WaxwormsTreat only — highly addictiveVery high fat; nutritionally poor as staple$6–$12
SilkwormsGreat all-around feeder; chameleons love themHigh protein, low fat, good calcium$20–$35 (per cup)
Phoenix Worms (BSF larvae)Excellent calcium source; seniorsExceptional calcium:phosphorus ratio$10–$20 (per cup)
Fruit Flies (D. mel / hydei)Baby reptiles, dart frogs, chameleonsModerate; gut-load dependent$5–$10 (per culture)

Frozen Rodent Prey

Snakes and some large lizards eat frozen/thawed rodents as their primary diet. Always feed pre-killed or frozen/thawed — never live prey, which can injure your snake and is unnecessary stress for the prey animal.

Prey SizeSuitable ForCost Each (online)
Pinky mouse (newborn)Baby corn snakes, small hatchlings$0.75–$1.50
Fuzzy mouseJuvenile corn snakes, small species$1.00–$2.00
Hopper mouseJuvenile ball pythons, medium snakes$1.25–$2.50
Adult mouseAdult corn snakes, adult ball pythons$1.50–$3.00
Small ratAdult ball pythons, medium boas$3.00–$5.00
Medium/large ratAdult boas, large pythons, monitors$5.00–$12.00

The Non-Negotiable: Gut Loading

Feeder insects are only as nutritious as what they've eaten. Gut loading — feeding your feeders high-nutrition food for 24–48 hours before offering them — is what actually delivers nutrition to your reptile. Crickets fed only grain gut-load are poor feeders. The same crickets fed collard greens, sweet potato, and commercial gut-load powder are excellent.

Good gut-load items: collard greens, mustard greens, sweet potato, squash, commercial gut-load powder (Repashy Bug Burger, etc.)

Calcium & Vitamin Dusting

Dusting feeders with supplements before offering is essential for most reptiles — particularly those without access to natural UV radiation.

SupplementWhen to UseNotes
Calcium without D3Most feedings (4–5×/week)Safe to use frequently; main calcium source
Calcium with D32× per month maximum (if UVB provided)D3 is fat-soluble — overdose is possible; let UVB do the work
Calcium with D3 (no UVB)3–4×/weekOnly use if animal has zero UVB access — still provide UVB if possible
Reptile multivitamin1× per weekRepashy, Herptivite, Rep-Cal are common brands
Vitamin A toxicity is real. Many reptile multivitamins contain preformed vitamin A (retinol). Over-supplementing causes hypervitaminosis A. If your diet already includes significant beta-carotene sources (butternut squash, sweet potato), discuss supplementation frequency with an exotic vet.

Breeding Your Own Feeders

If you have multiple reptiles or a single high-consumption species, breeding your own dubia roaches or crickets dramatically reduces cost. A medium dubia colony ($45–$80 to start) can sustain 2–3 adult bearded dragons indefinitely once established.

Get a complete feeding schedule for your specific reptile or amphibian — including prey size, frequency, and monthly cost.

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