Giant Millipede
Invertebrates
The gentle detritivore that works as a living composting machine!
🤓 Did you know? Despite their name, millipedes do not have 1,000 legs. Most species have 40 to 400 legs. However, a species discovered in 2021 (Eumillipes persephone) was found 60 meters underground in Australia and has a record 1,306 legs, making it the only true millipede.
🏠 Housing & Setup
A 20-gallon long terrarium (or equivalent) comfortably houses 2 to 3 adult North American giant millipedes (Narceus americanus) or African giant millipedes (Archispirostreptus gigas). Deep substrate (4 to 6 inches minimum) is essential as millipedes spend most of their time burrowing through and consuming it. Use a mixture of coconut fiber, organic topsoil (no fertilizers or pesticides), rotting hardwood (never pine or cedar), and leaf litter. This substrate IS their diet as well as their habitat. Temperatures of 72 to 80 degrees F are suitable for most pet species. Humidity should be high (70 to 80%) with adequate ventilation to prevent mold issues.
🥗 Diet & Feeding
Millipedes are detritivores: they eat decaying organic matter. Their primary diet is the substrate itself (rotting wood and leaf litter). Supplement with fresh vegetables: sweet potato, cucumber, zucchini, carrots, apple slices, and leafy greens. Rotate offerings and remove uneaten fresh food within 24 to 48 hours to prevent mold. Calcium is critical for their exoskeleton: offer cuttlebone pieces or crushed eggshell in the enclosure at all times. Avoid acidic fruits and vegetables (citrus, tomatoes).
🎮 Enrichment & Handling
Millipedes are nocturnal detritivores - they spend most of their time buried in the substrate, emerging at night to graze on decaying organic matter. Cork bark slabs, flat pieces of rotting hardwood, and varied substrate layers (different textures at different depths) provide natural enrichment for burrowing. Watch them emerge in the evening and methodically traverse the enclosure.
They are one of the most docile invertebrate pets and among the safest for beginners. They will walk slowly and steadily across hands and forearms, rarely making sudden moves. When threatened, they curl into a tight spiral - this is their primary defense mechanism. They may also secrete mild defensive chemicals (benzoquinones) that can temporarily stain skin a yellow-brown color. Wash hands thoroughly after handling. The stain fades within a few days.
Their enrichment needs are simple: fresh substrate, fresh food, and the right conditions. They are fascinating display animals that interact with their environment in a subtle, unhurried way that is genuinely relaxing to observe.
💊 Health & Common Issues
Substrate quality is the defining factor in millipede health. Poor substrate (wrong moisture level, wrong composition, lack of calcium) leads to failed molts and skeletal deformities. They molt periodically (burrowing deep to do so) and are vulnerable during this time. Never disturb a molting millipede. Common concerns include dehydration, mite infestations (treat with substrate replacement and drying one section of the enclosure), and calcium deficiency. Millipedes can live 5 to 10 years with appropriate care.
✅ Complete Care Checklist
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One-Time Setup
Ongoing (Per Year)
Setup total
$85-$165
Per year after
$55-$110
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❓ Frequently Asked Questions
Do millipedes actually have a thousand legs?
No - despite the name (milli = thousand, pede = foot), no millipede species has exactly 1,000 legs. Most common pet species have between 40 and 400 legs. Until 2021 no species with over 750 legs had been documented. Then Eumillipes persephone, discovered 60 meters underground in Australia, was confirmed with 1,306 legs - the first true 'millipede' by the literal definition. Your Giant African Millipede almost certainly has somewhere between 200 and 400 legs.
Are giant millipedes safe to handle?
Yes - they are one of the most handleable invertebrate pets. They walk slowly and steadily across hands and forearms, rarely make sudden moves, and have no venom or biting mechanism. When threatened, they curl into a tight defensive spiral. Their primary defense is secreting mild benzoquinone compounds from pores along their body segments, which can temporarily stain skin a yellow-brown color and cause mild irritation. Wash hands thoroughly after handling and avoid touching your eyes. The stain fades within a few days.
What do giant millipedes eat?
They are detritivores - in nature they eat decaying organic matter, and in captivity their primary food is the substrate itself (rotting wood and leaf litter). Supplement with fresh soft vegetables: sweet potato, cucumber, zucchini, carrot, apple slices, and leafy greens. Calcium is essential for their exoskeleton - keep cuttlebone or crushed eggshell in the enclosure at all times. Remove fresh food within 24 to 48 hours to prevent mold. Avoid acidic fruits (citrus, tomatoes) and anything that has been treated with pesticides.
How long do giant millipedes live?
5 to 10 years with appropriate care, making them one of the longer-lived invertebrate pets. The key to longevity is substrate quality - millipedes continuously burrow through and ingest their substrate, so maintaining proper moisture levels, rotting hardwood content, and consistent calcium supplementation directly determines their health and lifespan. They molt periodically by burrowing deep into the substrate; never disturb a burrowed millipede that hasn't surfaced for several days, as it may be mid-molt.
How important is calcium for millipedes?
Critical. Millipedes are continuously rebuilding their exoskeleton and require constant dietary calcium. Without adequate calcium, their segments become soft, they fail to molt cleanly, and skeletal deformities develop over successive molts. The simplest solution is to leave a piece of cuttlebone in the enclosure at all times - millipedes will gnaw on it as needed. Crushed eggshell works as well. This single addition prevents the most common long-term health problem in captive millipedes.
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