Complete Millipede Care Guide
Giant millipedes are gentle, fascinating invertebrates that make excellent pets for those seeking an unique, low-maintenance companion. With their many legs, docile nature, and important role as decomposers, millipedes offer an educational and rewarding pet-keeping experience. This guide focuses on everything you need to provide excellent care.
Understanding Millipedes
Millipedes are not insects but myriapods, belonging to their own class of arthropods.
Key Characteristics
- Lifespan: 5-10+ years with proper care
- Size: Giant species reach 6-11 inches; smaller species 1-4 inches
- Legs: Not actually 1,000; most have 100-400 legs
- Activity: Primarily nocturnal; may hide during day
- Temperament: Very docile; handle well
- Defense: Curl into spiral; some secrete defensive chemicals
- Role: Decomposers; eat decaying organic matter
Millipedes vs. Centipedes
- Millipedes: Two pairs of legs per segment, slow-moving, herbivores/detritivores, docile
- Centipedes: One pair of legs per segment, fast, venomous predators, not suitable pets
Choosing Your Millipede
Several giant millipede species are popular in the pet trade.
Popular Species
- African Giant Millipede (Archispirostreptus gigas): Largest species, 10+ inches, very docile
- Bumblebee Millipede (Anadenobolus monilicornis): Striking yellow and black, smaller (3-4 inches)
- Florida Ivory Millipede (Chicobolus spinigerus): US native, cream colored, 3-4 inches
- Scarlet Millipede (Trigoniulus corallinus): Bright red, smaller species
- Smoky Oak Millipede (Narceus americanus): US native, dark colored, hardy
- Thai Rainbow Millipede (Thailandbolus species): Colorful, impressive appearance
Where to Acquire
- Reputable invertebrate breeders
- Specialty pet stores
- Reptile expos
- Note: Some species may have import restrictions
Enclosure Setup
Millipedes need humid enclosures with proper substrate depth. A pet's small daily signals — eaten portions, energy level, coat — are the primary feedback loop. Use it over any rigid rule.
Enclosure Size
- Minimum: 10-gallon tank for giant species
- Communal: Millipedes can be kept in groups; increase size accordingly
- Floor space: More important than height
- Secure lid: Ventilated but prevents escape
Substrate - Critical Component
Substrate is both habitat and food source for millipedes.
- Base mixture: Organic topsoil, coconut fiber, and leaf litter
- Leaf litter: Essential; oak and other hardwood leaves (avoid pine, cedar)
- Rotting hardwood: White rotting wood pieces are excellent food source
- Depth: 4-6 inches minimum; deeper is better for burrowing
- Moss: Sphagnum moss helps maintain humidity
Substrate Safety
Never use soil with pesticides, fertilizers, or chemicals. Avoid cedar or pine products (toxic). Leaf litter should be collected from pesticide-free areas. Let wild-collected materials dry out first to kill any pests.
Decor and Additions
- Hides: Cork bark, wood pieces, or commercial hides
- Climbing surfaces: Bark pieces leaning against walls
- Water dish: Shallow dish, optional if substrate kept moist
- Live plants: Pothos, moss; millipedes won't eat live plants
Temperature and Humidity
Millipedes require consistent humidity levels to thrive.
Temperature
- Ideal range: 72-80°F (22-27°C)
- Room temperature: Often sufficient
- Heat source: Low-wattage heat mat on side if needed
- Avoid: Temperatures above 85°F or below 65°F
Humidity
- Critical requirement: 70-80% humidity
- Substrate: Keep moist but not waterlogged
- Misting: Daily to every other day as needed
- Squeeze test: Substrate should clump but not drip water
- Ventilation: Some needed but not excessive
Humidity is Essential
Millipedes breathe through spiracles and can dehydrate quickly in dry conditions. Low humidity causes stress, failed molts, and death. Always maintain moist substrate and monitor humidity levels.
Feeding
Millipedes are detritivores, eating decaying organic matter. Recognising their pet as a specific species with specific needs elevates the quality of care across the board.
Primary Food Sources
- Leaf litter: Decaying hardwood leaves (oak, maple, beech)
- Rotting wood: White-rotted hardwood is excellent
- Substrate: They eat the organic matter in their substrate
Supplemental Foods
- Vegetables: Cucumber, zucchini, squash, sweet potato, carrot
- Fruits: Banana, apple, melon (in moderation)
- Protein: Occasional fish flakes, dried shrimp
- Calcium: Cuttlebone, calcium powder, crushed eggshells (essential)
Feeding Tips
- Remove uneaten fresh foods before molding
- Calcium should always be available
- Replace leaf litter as it's consumed
- Don't overfeed fruits (can attract pests)
Molting
Millipedes molt periodically throughout their lives to grow.
Signs of Molting
- Reduced activity and hiding
- Loss of appetite
- May burrow into substrate
- Dull coloration
Molting Care
- Maintain humidity during molting
- Do not disturb a molting millipede
- Ensure adequate calcium availability
- New exoskeleton will be soft and pale initially
- May eat old exoskeleton (normal)
Handling
Millipedes are among the most handleable invertebrates.
Safe Handling Practices
- Let millipede walk onto your hand
- Support the body fully
- Move slowly and calmly
- Handle over a soft surface
- Wash hands before and after
- Avoid handling during or after molting
Defensive Secretions
- Millipedes secrete defensive chemicals when stressed
- Can stain skin brown/yellow
- May cause mild irritation on sensitive skin
- Keep away from eyes and mouth
- Wash hands after handling
Handling Safety
While millipede secretions are not dangerous, they can irritate eyes and mucous membranes. Always wash hands after handling. If secretions contact eyes, rinse thoroughly with water. Some people may have skin sensitivity to the secretions.
Health Concerns
Healthy millipedes are generally hardy with proper care.
Signs of Healthy Millipede
- Active, especially at night
- Smooth, intact exoskeleton
- All legs functioning
- Good appetite
- Responds to touch by curling
Common Issues
- Dehydration: Wrinkled appearance, lethargy; increase humidity immediately
- Mites: Tiny dots on body; some mites are commensal, but heavy infestations need treatment
- Stuck molt: Caused by low humidity; increase moisture
- Leg loss: Can happen from injury; usually not fatal
- Pesticide exposure: Often fatal; always use safe substrate
Dehydration Emergency
A dehydrated millipede appears wrinkled and may be unresponsive. Immediately place in a container with damp (not wet) paper towels. Mist lightly. If it recovers, ensure enclosure humidity is increased. Dehydration can be fatal if not addressed quickly.
Breeding
Millipedes can breed in captivity with proper conditions.
Breeding Basics
- Keep multiple millipedes together
- Provide deep, moist substrate for egg-laying
- Eggs are laid in substrate and take weeks to months to hatch
- Babies are tiny and white, becoming darker with age
- Young can stay with adults (not cannibalistic)
- Growth is slow; may take years to reach adult size
Communal Keeping
Millipedes are one of the few invertebrates that do well communally.
Benefits
- More active when kept in groups
- Interesting social behaviors
- Can keep multiple species together (similar requirements)
- Breeding more likely in groups
Guidelines
- Increase enclosure size for multiple animals
- Ensure adequate food resources
- Monitor that all individuals are thriving
- Keep similar-sized millipedes together
Common Beginner Mistakes
- Insufficient humidity: Number one cause of millipede deaths
- Poor substrate: Substrate is food; quality matters
- No calcium: Essential for healthy exoskeleton
- Too dry substrate: Should be moist but not waterlogged
- Contaminated materials: Pesticides are lethal
- No leaf litter: Primary natural food source
- Over-handling when stressed: Let them settle in first
- Keeping with predators: Don't house with centipedes or other predators
Ask the AI About Millipede Care
Have questions about millipede species, substrate setup, or care concerns? Our AI assistant can provide personalized guidance for your many-legged friend.