FaunaHub

Girdled Lizard (family Cordylidae)

ReptileLizardAfrica

Armadillo girdled lizard (Ouroborus cataphractus), a spiny brown lizard biting its own tail in a ring.

Armadillo girdled lizard (Ouroborus cataphractus).

Image: frank wouters, CC BY 2.0, via Wikimedia Commons.

Overview

Girdled lizards (family Cordylidae) are heavily armoured lizards of Africa, named for the “girdles” of rectangular, spiny scales (osteoderms) that ring their bodies and tails like bands of plate armour. The most famous is the armadillo girdled lizard (Ouroborus cataphractus), a small, golden-brown lizard from South Africa that looks remarkably like a tiny dragon — and that has one of the most charming defences of any reptile.

When threatened, the armadillo girdled lizard curls up and bites its own tail, forming a tight, spiky ring (much like an armadillo rolling into a ball), so a predator is met with a hard, prickly circle and no soft parts to grab.

Note: “girdled lizard” covers a family of species; details here use the armadillo girdled lizard as a reference. Treat general statements as approximate and verify against authoritative sources.

Habitat & Range

Girdled lizards live in Africa, many in the rocky drylands of southern Africa. The armadillo girdled lizard inhabits arid, rocky scrubland along parts of western South Africa, sheltering in rock cracks and crevices. Other girdled lizards occupy a range of rocky habitats, where their flattened bodies let them wedge into narrow gaps for safety.

Diet

Girdled lizards are mainly insectivores, eating beetles, termites, and other small invertebrates, with some species taking a little plant material too. The armadillo girdled lizard feeds heavily on termites and other insects, foraging near its rocky shelter and dashing back to cover at any sign of danger.

Behavior

The armadillo girdled lizard's tail-biting ball is its signature trick, but its armour and rock-dwelling habits are just as important: when alarmed it usually first bolts into a crevice and puffs up to wedge itself in tightly, making it very hard to extract; rolling into a ball is a defence used when caught in the open. Unusually for a lizard, this species is social, living in groups in the same rock cracks, and it gives birth to live young (rather than laying eggs), typically just one or two at a time, which makes for slow reproduction. Girdled lizards are day-active and bask to warm up before foraging.

Human Interaction & Conservation

The armadillo girdled lizard's dragon-like looks have unfortunately made it a target for the illegal pet trade, which — together with its slow reproduction and limited range — has been a conservation concern, and it is legally protected in South Africa; collection from the wild should never be supported. Other girdled lizards vary in status. Protecting their rocky habitats and curbing illegal collection are key. Consult the IUCN Red List for species-specific status.

More photos of the girdled lizard

A girdled lizard showing its heavily armoured, spiny scales.

Armadillo girdled lizard (Ouroborus cataphractus).

Image: Maryna Gargai, CC BY-SA 3.0, via Wikimedia Commons.

Frequently Asked Questions — Girdled Lizard

Why does the armadillo girdled lizard bite its own tail?
It's a defence. When caught in the open and threatened, the armadillo girdled lizard curls up and grips its tail in its mouth, forming a tight, spiky ring — much like an armadillo rolling into a ball. This presents a predator with a hard, prickly circle and tucks away the lizard's soft belly and head, making it very awkward to attack or swallow.
Why are they called 'girdled' lizards?
Because of their armour. Their bodies and tails are ringed with girdles — bands — of rectangular, often spiny, bony-cored scales, arranged in rows around the body like belts of plate armour. These protective scales give the family its name and its tough, armoured appearance.
Do girdled lizards lay eggs?
The armadillo girdled lizard doesn't — it gives birth to live young, usually just one or two at a time, which is unusual among lizards and means it reproduces slowly. (Reproduction varies across the girdled lizard family.) This low birth rate is part of why over-collection for the pet trade is such a concern for the species.
Are girdled lizards good pets?
The armadillo girdled lizard is best left in the wild. Its dragon-like looks have driven illegal collection that, combined with slow reproduction and a limited range, threatens wild populations, and it's legally protected in South Africa. Buying wild-caught girdled lizards fuels this harm, so they should be admired in nature or only ever sourced through strictly legal, responsible channels.

Sources and further reading

Authoritative wildlife references used for general educational context. Conservation status should always be verified against current IUCN Red List data. External links open in a new tab.