Guide to feeder insects for reptiles: nutritional comparison, gut loading, and storage methods for crickets, dubias, mealworms, and silkworms.
Key Takeaways
Guide to feeder insects for reptiles: nutritional comparison, gut loading, and storage methods for crickets, dubias, mealworms, and silkworms.
Feeding reptiles live or prepared insects is the foundation of their nutrition. Understanding appropriate prey species, sizes, and feeding schedules ensures proper nutrition and prevents health issues. This comprehensive guide covers reptile feeding best practices.
✍️
BreederDirect Editorial
The BreederDirect editorial team specializes in care information for animals, covering veterinary care and breeding to deliver beginner-friendly guides.
Find Reptiles on BreederDirect
Buy directly from verified breeders
Browse Related Listings
Find Reptiles listings related to this article on BreederDirect. Buy directly from verified breeders.
Related Tools
Related Articles
Browse by Category
🪸Coral
🐠Marine Fish
🐟Tropical Fish
🐡Goldfish
🐟Medaka
🦎Reptiles
Share
Why Proper Feeding Matters
Nutritional requirements:
- Insects provide essential proteins and fats
- Variety of insects offers diverse nutrients
- Proper sizing prevents choking or feeding refusal
- Feeding schedule maintains healthy growth
- Balanced diet supports immune function and reproduction
Common feeding challenges:
- Nutrient-deficient insects
- Improper prey size
- Overfeeding or underfeeding
- Escaping prey stressing the reptile
- Parasites or disease from wild-caught prey
Appropriate Insect Prey
Crickets:
- Staple prey for many reptiles
- Good nutritional balance
- Multiple sizes available
- Can be gut-loaded for added nutrition
- Store in well-ventilated containers
Dubia Roaches:
- High protein content
- Excellent nutrition profile
- Require specific container conditions
- Cannot breed in room temperatures
- More expensive than crickets
Mealworms:
- Readily available
- High fat content (good for growth)
- Slow metabolism (stay alive longer)
- Less nutritious than other insects
- Use as supplement, not staple
Waxworms:
- High fat and nutritional value
- Attractive to picky eaters
- Expensive for regular feeding
- Use as treats or supplements
- Can cause obesity if overfed
Hornworms:
- High water content
- Good size for larger reptiles
- Short shelf life
- High calcium content
- Excellent supplemental prey
Grasshoppers and Roaches:
- Various species available
- Good nutrition profiles
- Some species breed easily
- Dubia roaches particularly valuable
- Check regulations before collecting wild
Prey Size Considerations
Rule of thumb:
- Prey should be roughly the diameter of the reptile's head
- Too-large prey can cause choking or impaction
- Too-small prey won't satisfy the reptile
- Match size to mouth capacity
- Adjust as reptile grows
Species-specific guidelines:
- Bearded dragons: Insects about the size of the head for adults; much smaller for juveniles
- Corn snakes: Mice or appropriately-sized insects
- Small lizards: Appropriately-sized insects relative to head
- Monitors: Larger insects or other vertebrates as appropriate
Feeding Frequency and Quantity
Juvenile reptiles:
- Feed more frequently (daily or multiple times daily)
- Offer appropriately-sized prey
- Provide variety for nutrition
- Monitor growth and adjust portions
Adult reptiles:
- Frequency depends on species metabolism
- Generally 2-3 times weekly for most species
- Reduce feeding for sedentary periods
- Monitor body weight and adjust accordingly
Seasonal variations:
- Breeding season may increase appetite
- Winter dormancy reduces feeding needs
- Temperature fluctuations affect metabolism
- Adjust accordingly for these periods
Gut-Loading Insects
Gut-loading increases nutritional value of prey insects.
Process:
- Feed insects nutritious food 24-48 hours before offering to reptile
- Include calcium-fortified food sources
- Vegetables like dark leafy greens
- Commercial gut-load preparations available
- Well-fed insects are more nutritious
Gut-load food options:
- Collard greens, kale
- Calcium powder mixed with food
- Squash, sweet potato
- Commercial cricket chow
- Fruit in moderation
Feeding Methods
Live prey feeding:
- Place prey in enclosure
- Reptile hunts naturally
- More engaging for the animal
- Risk: Prey may injure reptile
- Monitor during feeding
Tong feeding:
- Hand-held or feeding tongs
- Better control and safety
- Prevents escaping prey
- Allows monitoring of consumption
- Recommended for safety
Prepared/dead prey:
- Thawed frozen insects or vertebrates
- Safest for reptile
- Some reptiles refuse non-living prey
- Fresher frozen options increasingly available
Dealing with Feeding Problems
Picky eaters:
- Ensure prey is appropriate size
- Try different insect varieties
- Ensure proper temperature (affects appetite)
- Check for health issues
- Some species are naturally selective
Overeating:
- Portion control essential
- Remove uneaten insects
- Monitor body weight
- Adjust feeding frequency downward
- Obesity causes health problems
Refusal to feed:
- Check temperature/humidity is appropriate
- Ensure reptile is healthy
- Verify prey size and species
- Some species fast seasonally
- Consult veterinarian if prolonged
Nutritional Supplements
Calcium and vitamin D:
- Essential for all reptiles
- Dust prey 2-3 times weekly with calcium powder
- Vitamin A supplementation varies by species
- Avoid oversupplementation (toxic)
- Follow species-specific guidelines
Variety:
- Rotate insect species regularly
- Different insects offer different nutrients
- Reduces dependence on single food
- Prevents nutritional imbalances
- More interesting for the animal
Food Storage and Safety
Insect storage:
- Keep containers well-ventilated
- Maintain appropriate temperature
- Provide proper bedding
- Feed insects nutritiously
- Replace water regularly
- Clean containers frequently
Disease prevention:
- Use commercial sources when possible
- Avoid wild-caught without inspection
- Quarantine new insect sources
- Monitor for mites or parasites
- Replace expired insects
Species-Specific Feeding Guides
Bearded dragons:
- Mix insects and plants
- Juveniles: 50-80% insects
- Adults: 20-50% insects
- Daily feeding for juveniles
- 3-4 times weekly for adults
Corn snakes:
- Primarily fed mice or insects
- Adults: Weekly feeding appropriate
- Size: Proportional to body diameter
- Live or pre-killed based on preference
- Feeding in separate enclosure often safer
Leopard geckos:
- Primarily insectivorous
- Daily feeding or every 2 days
- Small insects: crickets, roaches
- Calcium supplementation important
- Juveniles need more frequent feeding
