What Is a Komodo Dragon?
The Komodo dragon (Varanus komodoensis) is the world's largest living lizard, growing up to 3 meters long and 90 kilograms. It's a venomous apex predator found only on five Indonesian islands within Komodo National Park.
| Quick Fact | Detail |
|---|---|
| Scientific name | Varanus komodoensis |
| Classification | Largest living species of monitor lizard |
| Size | Up to 3 meters long, up to 90 kg (largest verified specimen: 3.13 m, 166 kg) |
| Top speed | Up to 20 km/h (12 mph) in short bursts |
| Diet | Deer, wild boar, water buffalo — can eat up to 80% of its body weight in one meal |
| Venom | Venom glands lower prey's blood pressure and prevent clotting, delivered through serrated, iron-coated teeth |
| Lifespan | About 30 years in the wild — see our Komodo dragon lifespan guide |
| Hatchlings | About 40 cm at birth, living in trees for their first years — read about baby Komodo dragons |
| Range | Komodo, Rinca, Gili Motang, Gili Dasami and parts of western Flores (no longer found on Padar) |
| Conservation status | Endangered — fewer than 1,400 mature adults estimated in the wild |
| Protected since | 1980, Komodo National Park; UNESCO World Heritage Site since 1991 |
Why Did Komodo Dragons Get So Big?
Komodo dragons evolved in isolation, on islands with no other large predators competing for the same prey. With nothing to check their growth, they became the dominant hunters of their environment — a phenomenon called island gigantism. Fossil evidence shows their ancestors were already present in the region millions of years ago, giving them an unusually long, uninterrupted run at the top of the food chain.
Their hunting strategy compounds the effect. Rather than chasing prey over distance, they conserve energy through ambush, striking in short, explosive bursts — a trait covered in depth in our full breakdown of Komodo dragon speed, including 2019 genome research on why their metabolism runs closer to a mammal's than a typical reptile's.
Where Komodo Dragons Live
Komodo dragons live wild on only five Indonesian islands: Komodo, Rinca, Flores, Gili Motang, and Gili Dasami — all within or near Komodo National Park, a UNESCO World Heritage Site established in 1980.
Komodo Island itself hosts the largest population, with guided treks departing from Loh Liang Ranger Station. Rinca Island, sometimes called "Komodo's younger sibling," offers a rawer, less-visited alternative with comparable sighting odds. For the full island-by-island breakdown — including which ranger stations to use and what else each island offers — see our complete habitat and location guide.
Curious how these giants begin life? Read about baby Komodo dragons and their years in the trees.
Explore the Komodo Dragon in Depth
How Fast Can They Run?
20 km/h in short bursts, and the 2019 genome study explaining why.
Read More →The World's Largest Lizard
How Komodo dragons compare to every other reptile alive.
Read More →Are They Dangerous?
The truth about their venom, and what to do if one approaches.
Read More →Komodo Dragon Teeth
Sixty serrated, iron-coated blades that are replaced for life.
Read More →Baby Komodo Dragons
Eggs, hatchlings and why young dragons live in the trees.
Read More →How Long Do They Live?
About 30 years in the wild, and why the 50-year claims don't hold up.
Read More →Where Exactly Do They Live?
A ranger-station-level guide to every island where dragons roam.
Read More →Can You Keep One as a Pet?
Why Indonesian law and CITES make private ownership illegal.
Read More →Meeting Them by Yacht
What a guided Komodo dragon trek from a liveaboard actually looks like.
Read More →How to See Komodo Dragons Safely
Independent travel inside Komodo National Park isn't permitted — every visitor treks with a trained park ranger, both for safety and to limit disturbance to the dragons. Treks typically run 1–2 hours along marked trails from Loh Liang (Komodo Island) or Loh Buaya (Rinca Island), with sightings common near ranger posts, shaded valleys, and waterholes.
- Fly into Labuan Bajo. The gateway town on Flores, connected daily to Bali and Jakarta.
- Sail to Komodo or Rinca Island. Most itineraries include both, along with Padar's viewpoint and Pink Beach.
- Trek with a ranger. Fixed trail, no exceptions — this is both a safety rule and a conservation one.
- Keep a 2–3 meter distance. Dragons are rarely aggressive unprovoked, but they are wild, and speed is deceptive at close range.
Komodo Dragon: Frequently Asked Questions
What is a Komodo dragon?
The world's largest living lizard, a venomous apex predator found only on five Indonesian islands within Komodo National Park.
How big do Komodo dragons get?
Up to 3 meters long and 90 kilograms, with the largest verified specimen reaching 3.13 meters and 166 kilograms.
Where do Komodo dragons live?
In the wild, only on Komodo, Rinca, Flores, Gili Motang, and Gili Dasami — all within or near Komodo National Park.
Are Komodo dragons dangerous to humans?
They can be. Attacks are rare but have occurred, mostly when people approach too closely or venture off guided trails.
How fast can a Komodo dragon run?
Up to 20 km/h (12 mph) in short explosive bursts, though they can't sustain that speed for long.
What do Komodo dragons eat?
Deer, wild boar, and water buffalo are primary prey. They're also opportunistic scavengers and can eat up to 80% of their body weight in one meal.
How long do Komodo dragons live?
About 30 years in the wild, according to the Smithsonian's National Zoo. Some males may live somewhat longer.
Are Komodo dragons endangered?
Yes. Fewer than 1,400 mature adults are estimated to remain in the wild, and the species is classified as Endangered.
Can I visit Komodo dragons without a guide?
No. All treks inside Komodo National Park require a licensed park ranger, for visitor safety and dragon protection.
Is Padar Island home to Komodo dragons?
No. Padar no longer has a resident dragon population, which is why its summit hike doesn't require a ranger escort.
What is the best time to see Komodo dragons?
Year-round, though early morning treks during the dry season (April–November) tend to offer the most active sightings.
See the World's Largest Lizard, Guided by Rangers
Three vessels, three ways to reach Komodo and Rinca Islands for a safe, guided dragon trek.
Samara I
Shared or small private charters within Komodo National Park, up to 12 guests.
Request QuoteSamara II
Exclusive private sailing, timed treks, and Komodo's full highlight circuit.
Request QuoteMischief
Dedicated dive charters that pair dragon treks with Komodo's dive sites.
Visit Mischief Voyage
