Here you’ll find 2 Reptiles that start with X, organized from “Xantus’s Leaf-toed Gecko” to “Xizang Hot-spring Keelback”. These entries range from a small, terrestrial gecko to a specialized keelback snake adapted to warm springs.

Reptiles that start with X are species whose common names begin with the letter X. One notable example is Xantus’s Leaf-toed Gecko, named for 19th-century naturalist John Xantus.

Below you’ll find the table with Common name, Scientific name, Habitat, and Average size (cm).

Common name: The everyday name helps you recognize species and lets you match entries to field guides or care notes.

Scientific name: The Latin binomial gives exact identification so you can find authoritative information and avoid confusion.

Habitat: Habitat notes indicate where the species lives, so you can understand its ecology and likely sightings.

Average size (cm): Average adult length in centimeters, including the measurement type (total length or snout–vent length) for clarity.

Sources: The Reptile Database, IUCN Red List, primary literature. Last updated: 2025-12-01.

Reptiles that start with X

Common nameScientific nameHabitatAverage adult size (cm)
Xantus’s Leaf-toed GeckoPhyllodactylus xantiArid rocky areas6 (SVL)
Xizang Hot-spring KeelbackThermophis baileyiHigh-altitude hot springs50 (TL)

Descriptions

Xantus’s Leaf-toed Gecko
A small gecko from Baja California, Mexico, with distinctive leaf-like toe pads for climbing. This nocturnal insectivore is a common species in its habitat. IUCN: Least Concern.
Xizang Hot-spring Keelback
A rare snake from Tibet, China, living at extreme altitudes. It relies on geothermal hot springs to survive the cold and primarily eats fish and frogs. IUCN: Vulnerable.
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