Reptiles
Leaf-tailed Gecko
Uroplatus phantasticus · also called satanic leaf-tailed gecko, phantastic leaf-tailed gecko, eyelash leaf-tailed gecko
The satanic leaf-tailed gecko is a small lizard from the rainforests of Madagascar that has evolved into an almost perfect replica of a dead leaf — not a leaf-green camouflage, but a specific imitation of a curled, brown, half-rotted leaf, right down to fake veins and holes where an insect might have chewed.
Overview
Leaf-tailed geckos of the genus Uroplatus are found only in Madagascar, and the satanic leaf-tailed gecko is the smallest and most leaf-like of them, at just 7–10 centimetres. It lives in humid eastern rainforest, on low branches and among dead foliage in the understory. It is nocturnal, hunting small insects and spiders by night and spending the day motionless in its disguise.
Being a dead leaf
The gecko’s camouflage is unusually specific. Its tail is shaped like a curled dry leaf; its skin bears vein-like markings; the edges of its body and jaw carry irregular flaps and notches that break its outline; and many individuals have actual holes and discoloured patches that mimic insect damage and decay. It comes in browns, tans, oranges, purples, and creams and can shift shade to match its background. By day it hangs head-down and still on a thin stem or in leaf litter, flattened, and effectively vanishes.
If the disguise fails
Discovered, the gecko switches to bluff: it gapes wide to flash a bright red mouth lining, raises and arches its body, and may wave or shed its leaf-tail as a decoy before fleeing. It has no venom and cannot hurt a person.
Status
The satanic leaf-tailed gecko is listed as Least Concern but is declining. Its rainforest habitat in eastern Madagascar is being cleared and fragmented, and the species is collected for the international pet trade; all Uroplatus geckos are on CITES Appendix II to regulate that trade, and captive-bred animals are preferred.
Leaf-tailed Gecko: common questions
How good is the leaf-tailed gecko's camouflage?
It is among the most detailed disguises of any animal. The satanic leaf-tailed gecko does not just match the colour of dead leaves — its tail is the shape of a curled, dried leaf, its skin carries markings that mimic leaf veins and midribs, its body edges have irregular flaps and notches like a decaying leaf, and many individuals have actual holes and brown "rot" patches that imitate insect and fungal damage. Held still against leaf litter, head down, with its body pressed flat and its outline broken by skin flaps along the jaw and limbs, it is genuinely almost impossible to pick out. If discovered, it can open its mouth wide to flash a startling red interior, or drop its leaf-tail as a decoy.
Why is it called "satanic"?
The name comes from the species epithet given by the describing scientist and from the gecko's appearance — the small horn-like projections above each eye, the pointed "eyelash" scales, the sometimes-reddish colour, and a wide gaping threat display with a red mouth all suggested something devilish. It has nothing to do with the animal's behaviour, which is entirely harmless. "Phantastic leaf-tailed gecko" and "eyelash leaf-tailed gecko" are alternative common names for the same species.
Are leaf-tailed geckos venomous or dangerous?
No. They have no venom and their small teeth cannot do meaningful harm to a person. Their entire defensive strategy is not to be seen; if that fails they try to look frightening — gaping to show the bright mouth lining, raising the body, waving or dropping the tail — and then simply flee. They are delicate animals, easily stressed, and should be observed rather than handled.
Can you keep a satanic leaf-tailed gecko as a pet?
They are kept by experienced reptile hobbyists but are considered difficult. They need a tall, heavily planted, cool, humid enclosure, a strict day-night and seasonal cycle, live insect food, and very gentle handling, and they do poorly with heat or dryness. A significant share of animals in the trade are still wild-collected from Madagascar, which — combined with rainforest loss — is a conservation concern, so captive-bred animals should be sought. All Uroplatus geckos are listed on CITES Appendix II, regulating their international trade.