Xenodermus javanicus, or the Dragon Snake, is a nocturnal, non-venomous snake native to Southeast Asia. It boasts a unique, rough-scaled appearance with prominent vertebral ridges, giving it a dragon-like look. Preferring humid environments, it thrives in lowland forests and marshy areas. This species is known for its secretive nature and unusual defensive behavior, coiling tightly when threatened.

Xenodermus javanicus, commonly known as the Javan mudsnake, is native to Southeast Asia. It is primarily found in the regions of Indonesia, Malaysia, and Thailand. Its distribution is predominantly in lowland tropical forests and swampy areas within these countries.

The Javan mudsnake inhabits tropical and subtropical moist lowland forests, as well as freshwater swamp forests. These environments are characterized by high humidity, abundant rainfall, and warm temperatures, typically ranging from 25°C to 30°C (77°F to 86°F). The regions have dense vegetation, providing ample cover and hunting opportunities for the snake.

Xenodermus javanicus occupies a specialized ecological niche as a semi-aquatic snake. It is adapted to moist and swampy environments, where it primarily preys on small amphibians and fish. The snake is nocturnal, using its cryptic coloration to blend in with the forest floor and water bodies, which assists in both predation and avoiding predators.