Green tree python (Morelia viridis)

Description and distinguishing features

Adults are predominantly bright green, which provides camouflage among foliage; juvenile coloration may be yellow, red or brown and changes as the snake matures. The species has a slender, laterally compressed body adapted for life in trees, with a prehensile tail used to secure a grip on branches. Typical physical traits include heat-sensitive pits along the lips that assist in detecting warm-blooded prey and large, forward-facing eyes for nocturnal hunting.

Habitat and range

Green tree pythons inhabit humid tropical forest and woodland. Their natural distribution includes New Guinea, several Indonesian islands such as parts of Indonesia, and the Cape York region of northern Australia, especially the Cape York Peninsula. They spend most of their time off the ground, favoring low to mid-level branches where they can ambush passing birds and mammals.

Behavior, diet and reproduction

These pythons are primarily nocturnal ambush predators that feed on small mammals, birds and occasionally reptiles. Reproduction is oviparous: females lay clutches of eggs and remain coiled around them, using muscular shivering to generate heat and maintain suitable incubation temperatures. Young undergo striking ontogenetic color changes before assuming adult green hues.

Captive care and human interactions

The species is popular in captivity, where selective breeding has produced a range of color and pattern morphs. Successful care requires attention to humidity, temperature gradients, secure arboreal enclosures and a diet of appropriately sized prey. Because of their specific needs and nervous temperament, they are recommended for experienced keepers.

Conservation and notable facts

While not considered among the most critically endangered snakes globally, green tree pythons face local pressures from habitat loss and collection for the pet trade. Their dramatic color change from juvenile to adult and their habit of draping in tight coils over branches are distinctive field marks that make them one of the most recognizable arboreal pythons in their range.

• Key traits: arboreal lifestyle, prehensile tail, vivacious adult green color.
• Important considerations: specific humidity and temperature needs in captivity; ethical sourcing to reduce pressure on wild populations.

For further reading and species accounts, consult regional field guides and herpetological references that cover the reptiles of New Guinea, Indonesia and Australia.