Tiger leg centipedes are the most approachable species in the hobby, which is a relative statement rather than a recommendation to relax. Scolopendra polymorpha is a North American native reaching 4 to 6 inches, considerably smaller than the tropical giants and with venom that is genuinely less severe, though still capable of a painful bite. They are hardy, tolerate a wide temperature range, and are widely available captive bred. If you want a centipede and you are sensible about containment, this is where to start.
Species Overview
Tiger legs are found across the southwestern United States and northern Mexico, in arid and semi-arid habitats where they shelter under rocks and logs by day and hunt at night.
The species name polymorpha means many-formed, and it is well earned. Colouration varies enormously by locality, from blue-grey to olive to orange-brown bodies, usually with darker banding at each segment margin and legs in a contrasting shade that gives the common name. Two animals from different populations can look like different species entirely.
Adults reach 4 to 6 inches, occasionally a little more. That is a meaningful difference from the 8 inch plus tropical Scolopendra, both in how much enclosure they need and in how much venom they can deliver.
Like all centipedes they have one pair of legs per body segment and are obligate predators, taking live prey only. The distinction from millipedes, which are harmless detritivores, is covered in our guide to telling the two groups apart.
| Attribute | Details |
|---|---|
| Scientific name | Scolopendra polymorpha |
| Adult size | 4 to 6 inches |
| Lifespan | 5 to 7 years |
| Difficulty | Intermediate |
| Temperature | 72 to 82F (22 to 28C) |
| Humidity | 55 to 70% |
| Handling | Never |
Enclosure Setup
Small and secure beats large and impressive. A 5 to 10 gallon tank or an equivalent plastic bin suits an adult, with floor space mattering more than height.
Escape-proofing comes first. A latching lid, ventilation holes smaller than the animal’s head capsule, and no gaps at the rim or around cable entries. Centipedes flatten to pass through openings that look impossible, and a tiger leg is small enough to exploit gaps a giant species could not. The full breakdown is in our centipede enclosure and containment guide.
Substrate: 4 to 5 inches, packed firmly. A mix of three parts coconut fibre, two parts topsoil, and one part play sand holds a burrow well. Loose substrate collapses and produces an animal that patrols the walls instead of settling.
Hide: cork bark or a flat piece of slate laid on the surface with one edge bedded in. Tiger legs are rock dwellers by preference and will wedge themselves underneath rather than digging elaborate tunnels.
Water dish: shallow, always filled, sunk level with the substrate.
Leave clear space below the lid. Substrate piled near the rim gives a launch point at the seam.
Temperature and Humidity
Tiger legs come from arid country and want drier conditions than the tropical species most centipede care sheets are written about. This is the most common husbandry error with them.
Target 55 to 70% humidity, achieved through a damp section of substrate rather than a uniformly moist enclosure. Pour water into one corner until that area is damp throughout and leave the rest on the dry side. The animal will position itself where it suits.
Temperature 72 to 82F, which is normal room temperature in most homes. They tolerate a wider range than tropical species and rarely need supplemental heat. If you do heat, use a low wattage mat on a side wall with a thermostat, never underneath.
Do not mist. Beyond being ineffective, it means opening the lid over an animal that moves fast, which is a risk with no payoff.
Ventilation matters. Small holes on two opposing walls give cross flow. A closed damp enclosure produces mold and mites.
The arrangement is close to what an arid-adapted arachnid wants, and if you keep one already the logic will be familiar. A desert hairy scorpion setup runs on the same principle: dry across most of the enclosure, one section with moisture, and the animal choosing between them.
Diet and Feeding
Tiger legs are enthusiastic predators and feeding is the one part of keeping them that is genuinely enjoyable to watch.
What to offer: crickets, dubia roach nymphs, red runners, and mealworms. Prey should be no longer than half the centipede’s body length.
How often: adults eat once every 7 to 10 days, juveniles every 4 to 5 days. They handle prey substantially larger than you might expect, but there is no benefit to pushing it.
Delivery: drop prey in through a partly opened lid using long tongs and close the lid immediately. Never hand-feed, and never reach in without knowing where the animal is.
Remove uneaten prey within 24 hours with long tongs. A cricket left in with a molting centipede will chew on it, and that is a common cause of death.
Refusal usually means a molt is coming. A centipede that stops eating and stays buried is preparing to shed. Stop offering food, keep water available, and wait.
Feeding intervals of a week or more and molts that happen out of sight are difficult to hold in your head, and the difference between a normal fast and a problem is entirely in the dates. Logging feeds and refusals in InvertMate gives you something to check rather than a rough impression.
The Bite: An Honest Assessment
Worth being direct about, since this is the deciding factor for most people.
Scolopendra polymorpha venom is less severe than that of the large tropical species. Reported bites typically produce localised sharp pain, swelling, and redness lasting hours to a day or two, often compared to a bad wasp sting. That is meaningfully milder than a Scolopendra subspinipes bite, which can cause severe pain and swelling persisting for days.
Milder is not mild. It is still a painful defensive bite from an animal that delivers venom through modified front legs called forcipules, and individual reactions vary. Anyone can have an allergic response to a venom they have not encountered before, and a bite is a reason to seek medical advice rather than to tough it out.
The practical conclusion: never handle it. Not because a tiger leg bite is likely to send you to hospital, but because there is nothing to gain. A centipede on your hand is not enjoying the experience, is looking for an exit, and moves faster than your reflexes. Experienced keepers move them with a catch cup and a card, over a bin, with the door shut.
Behaviour and Molting
Expect a nocturnal animal you see occasionally. During the day a tiger leg is under its hide or shallowly buried, and it will bolt for cover the moment the enclosure opens.
Normal behaviour: sudden fast movement when disturbed, a raised rear-end display in some individuals, and long periods entirely out of sight.
Signs something is wrong: constant wall patrolling, which usually means the substrate is too shallow, too dry, or too wet; or repeatedly sitting exposed in daylight, which is generally a moisture problem.
Molting happens underground and takes one to several weeks, during which the animal is soft and defenceless. Do not dig, do not feed, and do not disturb the enclosure. Leave any shed exoskeleton in place.
Growth is gradual, with adults reaching full size in two to three years and lifespans of 5 to 7 years, which is longer than most keepers expect from an animal this size.
Sourcing and Handling Transfers
Captive bred is available for this species, which is not true of every centipede in the trade, and it is worth seeking out. Wild caught animals arrive stressed, often with mites, and of unknown age.
Transfers are the only time you will be near the animal. The routine:
- Prepare the new enclosure fully first.
- Work inside a large empty bin, in a room with the door closed.
- Have a catch cup and a stiff card in hand before opening anything.
- Coax with long tongs or a long brush, never with fingers.
- Cup the animal, slide the card underneath, and move it in one motion.
- Do not chase it. A centipede pursued around an enclosure gets faster and more defensive.
If you cannot locate the animal, do not open the enclosure. That single rule prevents most escapes.
Common Problems
Escape. The defining risk with any centipede. Check the lid, the rim, and every hole before the animal goes in.
Kept too humid. The commonest husbandry error with this species, since most centipede advice is written for tropical Scolopendra.
Mites. Usually arrive on wild caught animals or uneaten prey. Rehouse into fresh substrate and tighten feeding hygiene.
Prey injury during a molt. Remove uneaten crickets within 24 hours, always.
Refusing food for weeks. Almost always a molt. Leave it alone.
Constant surface activity. Substrate depth or moisture. Check both before anything else.
FAQ
Are tiger leg centipedes good for beginners?
They are the most approachable centipede, but centipedes as a group suit a careful keeper rather than a first-time one. The husbandry is simple. The demands are containment discipline and accepting an animal you can never handle.
How big do tiger leg centipedes get?
Four to six inches as adults, occasionally slightly more. That is considerably smaller than tropical species such as the Vietnamese centipede, which is one reason they are more manageable. Species-specific detail on the larger ones is in our giant centipede care guide.
Is a tiger leg centipede bite dangerous?
The venom is less severe than that of large tropical species, with reported bites causing sharp pain and swelling for hours to a couple of days. It is still genuinely painful, individual reactions vary, and a bite warrants medical advice. Never handle the animal.
How often do tiger leg centipedes eat?
Adults every 7 to 10 days, juveniles every 4 to 5. Prey should be no longer than half the centipede’s body. Refusal for several weeks normally signals an approaching molt rather than a problem.
How long do tiger leg centipedes live?
Five to seven years, which is long for an animal of this size. They reach adult size in two to three years and continue molting throughout life, staying buried for one to several weeks each time.
Do tiger leg centipedes need high humidity?
No, and this is where most keepers go wrong. They are arid-adapted and want 55 to 70% with a damp corner rather than a uniformly moist enclosure. Care advice written for tropical species will keep them too wet.
Track Your Centipede with InvertMate
An animal that eats every ten days, buries for weeks at a time, and lives seven years is one you track by record rather than observation. InvertMate lets you log feeding dates and refusals, record molts and surface sightings, and monitor the temperature and humidity your enclosure actually runs at. Free on the App Store & Play Store.