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The World's Largest Lizards, Komodo Dragon Holds the Crown

Komodo Dragon, only found in Indonesia, is the largest lizard the world has ever seen.

Daniel Dimays Sumarno
Daniel Dimays Sumarno
October 11, 2026 6:00 PM GMT+7 · 1 min read
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Lizards are some of the most diverse reptiles on the planet, ranging in size from tiny geckos to massive monitor lizards and iguanas. Certain species reach remarkable lengths and weights, earning them a place among the true giants of the reptile world. Here is a look at some of the largest lizards, ranked according to the weights provided.

The Komodo Dragon tops this list, with an impressive weight of up to 166 kilograms. Native to several Indonesian islands, this enormous monitor lizard is known for its muscular body, powerful jaws, sharp claws, and lengthy tail. As a formidable predator, it can hunt and overpower prey considerably larger than itself.

The Asian Water Monitor can weigh as much as 50 kilograms, making it one of Asia's heaviest lizard species. An accomplished swimmer, it typically inhabits areas near rivers, wetlands, and other water sources. Its strong limbs and long tail allow it to travel effectively across both land and water.

The Black-Throated Monitor can reach approximately 27 kilograms. Native to parts of Africa, this large reptile possesses a robust body and physical characteristics suited to its surroundings.

Meanwhile, the Perentie, Australia's largest monitor lizard, can weigh around 22 kilograms. Known for its speed and agility, this skilled hunter inhabits the country's arid landscapes.

Another giant is the Crocodile Monitor, which can weigh roughly 21 kilograms. Found in New Guinea, it has an elongated body and tail that help it navigate through trees. The Nile Monitor reaches approximately 20 kilograms and is widespread throughout Africa, frequently occupying habitats close to rivers, lakes, and other waterways.

Large iguanas also feature among these impressive reptiles. The Blue Iguana can weigh up to 14 kilograms, while the Galápagos Land Iguana reaches around 13 kilograms. Both species are primarily herbivorous and are recognized for their sturdy builds and distinctive physical features.

Completing the list is the Marine Iguana, which can weigh approximately 12 kilograms. Endemic to the Galápagos Islands, it is unique as the only living lizard species adapted to foraging in the ocean. It dives into seawater to feed on algae attached to submerged rocks.

Together, these extraordinary reptiles highlight the remarkable diversity and adaptability of lizards. From the enormous Komodo Dragon to the ocean-foraging Marine Iguana, each species demonstrates how lizards have developed specialized traits that allow them to thrive in vastly different environments.

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