The Emerald Tree Monitor is one of the most striking monitor lizards in the world. Known for its bright green colour, slender body and impressive climbing ability, this rainforest reptile is perfectly adapted to life in the trees.
Emerald Tree Monitors are small to medium-sized monitor lizards. They commonly grow to around 70 to 100 cm long, including the tail. Their body is usually dark jade, lime green or turquoise-green, often with darker bands or markings across the back. This colour helps them blend into leaves and branches in their tropical forest habitat.
One of the most fascinating features of the Emerald Tree Monitor is its long, prehensile tail. The tail can be about twice as long as the body and is used to grip branches while climbing. The species also has long claws and specialised scales on the feet, helping it move through trees with agility and control.
Unlike larger monitor lizards that spend much of their time on the ground, the Emerald Tree Monitor is strongly arboreal, meaning it spends much of its life above the forest floor. Its narrow body, strong limbs and excellent balance allow it to move along branches, climb through dense vegetation and search for food in the canopy.
Guests visiting the Australian Reptile Park on the Central Coast can see this beautiful species up close in a safe, educational setting. For families, children and reptile enthusiasts, the Emerald Tree Monitor is a wonderful example of how lizards can adapt to life in the rainforest canopy.
Quick Facts
- Scientific name: Varanus prasinus
- Family: Monitor lizard
- Where they live: New Guinea and nearby islands, including parts of Indonesia, Papua New Guinea and some Torres Strait Islands
- Size: Around 70 to 100cm long, including the tail
- Weight: Usually around 300 to 500g
- Lifespan: Around 10 to 15 years
Where Emerald Tree Monitors Live
Emerald Tree Monitors are found in New Guinea and surrounding islands, including parts of Indonesia and Papua New Guinea. They are associated with tropical lowland forests, rainforest edges and other warm, humid environments with plenty of trees and cover.
This species spends much of its time in trees, using branches, vines and dense vegetation for shelter, hunting and movement. Its green colouration provides excellent camouflage among rainforest leaves, helping it stay hidden from predators and prey.
Emerald Tree Monitors may also use tree hollows and other sheltered spaces for protection. Their climbing ability, prehensile tail and strong claws make them highly suited to moving through complex forest habitats.
Seeing an Emerald Tree Monitor at the Australian Reptile Park gives visitors the chance to learn about a species from one of the most biodiverse regions on Earth. Its colour, agility and rainforest lifestyle make it one of the most fascinating monitor lizards for families and reptile enthusiasts to discover.
What Emerald Tree Monitors Eat
Emerald Tree Monitors are carnivorous predators. Their diet includes insects, spiders, centipedes, small reptiles, birds, eggs and small mammals. In the wild, they often hunt among branches, tree hollows and dense vegetation.
This species is an active hunter rather than a sit-and-wait predator. It uses its sharp vision, strong climbing ability and quick movements to search for prey in the trees. Its long claws help it grip branches while moving through the canopy, and its slender body allows it to explore narrow spaces where prey may be hiding.
Insects and other invertebrates make up an important part of the Emerald Tree Monitor’s diet, especially prey such as grasshoppers, crickets, beetles, cockroaches and stick insects. Larger individuals may also take small vertebrates when the opportunity arises.
In the wild, Emerald Tree Monitors play an important role in rainforest ecosystems by helping control populations of insects and other small animals. Their story also helps visitors understand that monitor lizards are not all large, ground-dwelling predators. Some, like the Emerald Tree Monitor, are specialised tree-dwellers with unique rainforest adaptations.
Emerald Tree Monitors Lifecycle
Emerald Tree Monitors lay eggs rather than giving birth to live young. Females usually lay small clutches, often with two to five eggs, in a protected location.
In the wild, females may use arboreal termite nests, tree hollows or other sheltered spaces as nesting sites. These locations help protect the eggs and provide a stable, warm and humid environment for development.
Once the eggs hatch, young Emerald Tree Monitors are independent and must find food and shelter for themselves. Hatchlings are small, agile and already equipped with the instincts they need to climb, hide and hunt in their rainforest habitat.
For families visiting the Australian Reptile Park, the Emerald Tree Monitor is a great example of how varied lizard species can be. Some lizards live in deserts, some shelter under rocks, and others, like the Emerald Tree Monitor, are specialised for life high in the trees.
