Top 8 Largest Lizards in the World

Introduction: Lizards are a diverse group of reptiles found all over the world, and they come in various shapes and sizes.

While most lizards are relatively small, some have evolved to become giants in the reptile kingdom.

In this listicle, we’ll explore the top 8 largest lizards on the planet, from massive monitor lizards to prehistoric giants that once roamed the Earth.

Komodo Dragon

Native to the Indonesian islands of Komodo, Rinca, Flores, and Gili Motang, the Komodo Dragon is the largest lizard in the world.

These fearsome reptiles can grow up to 10 feet (3 meters) in length and weigh as much as 150 pounds (68 kilograms). Their powerful jaws and venomous bite make them formidable predators in their habitat.

Nile Monitor

The Nile Monitor is a large lizard found throughout Africa. It can reach lengths of up to 7.5 feet (2.3 meters) and is known for its excellent swimming abilities.

These lizards are often seen near water sources, where they hunt for prey such as fish, birds, and small mammals.

Asian Water Monitor

Another impressive monitor lizard, the Asian Water Monitor, is native to South and Southeast Asia.

It can grow up to 10 feet (3 meters) long and is often found in or around bodies of water, where it feeds on fish, crustaceans, and even carrion.

Crocodile Monitor

Endemic to New Guinea, the Crocodile Monitor is known for its long, slender body and incredible tail, which can be as long as its body.

These lizards can reach lengths of 8 to 12 feet (2.4 to 3.6 meters) and are known for their tree-dwelling behavior.

Lace Monitor

The Lace Monitor, also known as the Lace Goanna, is a large lizard native to eastern Australia.

They can grow up to 7 feet (2.1 meters) in length and are arboreal, spending a significant amount of time in trees. They have a varied diet, including birds, insects, and even small mammals.


Found in the arid regions of Australia, the Perentie is the largest monitor lizard on the continent.

It can reach lengths of up to 8.2 feet (2.5 meters) and is an apex predator in its habitat, preying on small mammals, birds, and other reptiles.

Argus Monitor

The Argus Monitor is native to northern Australia and parts of Indonesia. It can grow up to 6.6 feet (2 meters) in length and is known for its distinctive, banded pattern.

These lizards are terrestrial and feed on a diet consisting of insects, small vertebrates, and carrion.

Borneo Earless Monitor

The Borneo Earless Monitor is a unique and lesser-known lizard species. It’s small compared to the other lizards on this list, reaching lengths of only 12 to 15 inches (30 to 38 centimeters).

However, it’s included for its rarity and intriguing characteristics, such as the absence of external ear openings and its burrowing lifestyle.


Lizards come in a wide range of sizes, but these eight species stand out as some of the largest and most fascinating reptiles on the planet.

From the legendary Komodo Dragon to the lesser-known Borneo Earless Monitor, these lizards showcase the diversity and adaptability of reptiles in different ecosystems around the world.

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