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

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

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

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

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