The Komodo dragon (Varanus komodoensis) belongs to the group known as monitor lizards, from the ancient belief the creatures monitor or warn, of the presence of crocodiles. The komodo is the largest species of monitor lizard, which are found throughout Asia, Africa, and Australia. The natives call the dragon ora, or buaya darat (land crocodile).
Fossils strikingly similar to the dragon date back 130 million years. The creatures has been extinct everywhere but there since the Jurassic period. The area's isolation and strong ocean currents ensured the lizard’s survival.
Named by a Dutch scientist P.A Ouwens the dragon have lured visitors since their discovery in 1912. The komodo dragon came under the legislative protection of the Sultan Bima in 1915, a mere three years later. Yet hunting continued until 1937 when the dutch finally put a stop it. About 600 ora have been trapped shot or embalmed for museums in the past 60 years. Now the wildlife management office in Bogor has set a limit of but five year komodo killed strictly for scientific purposes. The fiercest lizard known, komodo can down deer, goat, or wild pig ripping them apart with saw like teeth. These highly specialized slicing teeth, as well as the lizard’s predatory habits, are unique among reptiles.
Komodo dragon can lift up their heavy tails and beliefs to sprint at up to 18 km per hour, but only for short distances. Dragon also enter the sea and swim, sometimes against strong tidal currents up to 1,000 meters to offshore islets. They can plunge to depths of four meter, easily swimming 100 meters while submerged.
The komodo dragon has uncanny senses of smell and touch and is one of the world’s most intelligent reptiles. In captivity they have the ability to recognize and obey only certain zookeepers. Barely a dozen specimens of this rate species are found in the world’s zoos outside Indonesia, and if kept in captivity for long periods komodo grow fat and phlegmatic and usually die within a few years of amoebic parasites. Back to the Top
Komodo monitors prefer naturally made burrows along the banks of dry riverbeds, or of the steep slopes of open hills, usually behind overhanging vegetation, big rocks, or tree roots. Komodo villagers know the best sites. The dragon seek refuge in these holes during really hot days; they’re seldom used during the wet season. Burrows serve as a heat sink at high temperatures, conserving the panting lizard’s body water. Burrows act as well as insulated chambers when night temperatures drop. Cold-blooded, the dragon don’t usually emerge from their holes until after 08.00 – 09.00 when the air starts to get hot. Diurnal, they retire to their burrows by 19.30 and are very deep sleepers.
Burrows are commandeered from rodents or porcupines, in length averaging only 1.5 meters. The reptile’s head and shoulders therefore often protrude from the entrance; inside the burrow their tails are bent like hairpins . Sometimes several dragons use the same burrows, and there can be as many as 18 burrows to a burrow cluster. Back to the Top
The tail is the adult’s best defense and most dangerous weapon. An adult runs through the grass with its tail lifted off the ground, lashing it about, or winds it like a snake and delivers mighty blows. Its thick, strong front legs and huge claws enable the lizard to climb hilly terrain and hold down carrion while ripping and tearing. The dragons are superlative diggers, able to excavate a meter-deep hole in less than an hour. When trapped in stockades, they can easily dig under the walls to escape. Starting February the dragons shed their skins; the sloughing is completed by the end of the month.
Young dragons are the most unpredictable, the speediest, and the most tree climbers . Sometimes you see them perched in trees preying on monkeys; some even live in hollow trees.
Coloration changes from speckled, multihued, greenish-yellow sub adult to the standard dappled gray adults, large male specimens have yellowish-green spots on their snouts. The clay color camouflages the mature ora as it waists in ambush, while the coloration of the young protects as they scamper through leafy trees. Back to the Top
The carnivores show a marked preference for pregnant hoofed animals. And are able to distinguish these female by scent. On Flores and Rinca Island, a dragon will wait beneath a foaling mare so it can eat the newborn, the straining mare can only try to kick the lizard as she gives birth. Not only are the dragons fond of fetuses and after birth, but their harassment of the female so distresses and worries her it often causes a miscarriage, which then leaves her virtually incapacitated and more open to attack herself. Back to the Top
Dragon assume attack posture when they hold their heads low, slightly cooked to one side, crouching low to the ground. Large ones often strike their prey with the tail, then grasp the prey by the throat and head, jerking it violently from side to side. It’s a popular myth that dragons inflict poisonous bites, in fact a great number of bitten deer who escape eventually die of massive infections.
Dragon forage up to 10 km per day from sea level to 500 meters, to offshore islets, mangrove swamps, grass thickets, even over reefs and bars, following their prey – the largest foraging area of any lizard. They feed erratically – it’s feast or famine. Back to the Top
They plunge their heads first into the bellies of carcasses to trip out the intestines and stomach. The only reptiles that cut their prey into sections before swallowing, varanids rock back and forth as they bite, bolting down each chunk after it’s sawed off the body. A 40 kg ora can eat a 30 kg wild boar, swallowing the hindquarters whole, it takes a several lizard three to five days to devour a 1,200 kg water buffalo. Articulate jaws like a snake’s enable it to maneuver such odd shapes as horned heads and pelvic sections into their stomachs.
The dragon powerful front legs, sharp claws, and thick bag legs are vital for holding down carrion, tearing off rotted hide, ripping under bellies, and digging out megapode nest s and rodent burrows. In comparison with world’s other large carnivores, Komodo have fewest competitors for carrion. Only with flies, wild dogs, beetles, crows and kites is the magnificent scavenger-predator willing to share its carcass. But even the largest dragons can be driven from a kill on a hot day by a belligerent and persistent boar.
Varanids can go up to 1.5 months without water , when drinking they plug their heads in up to their eyes, gulp water, then raise their head like chickens to allow the water to run down their throats. Back to the Top
Hierarchy And Reproduction
Courting males exhibit themselves to the females by dancing, calling, posturing, and other conspicuous and curious visual behavior. Females behave like-wise, with pushups, back-arching, and head bobbing. Courtship take place through nearly the entire year. Actual population often occurs near carrion and is usually preceded by tongue flicks over the female’s back or by the male grasping the female’s neck skin with his jaws. Females are very aggressive during courtship, biting the male trying to mount her, sometimes severally injuring or even killing him. A male must completely overpower the female in order to copulate successfully.
Approximately two weeks later the female digs out hal-meter-deep hole in the sand under living shrub or on a hillside, then lays the soft, smooth, leathery, golfball-size eggs. The incubation period is about eight months, the young usually hatching in April or May. Occasionally, the male and female will eat some or all of a brood of eggs. The Komodo is perhaps the only lizard to use this method of controlling overpopulation. Back to the Top
When high-ranking ora approach carrion , younger generation low-ranking individuals often scatter head-long into the underbrush. Smaller Komodo also go through elaborate appeasements displays in front of larger dragons to keep from being attacked. And for good reason : few vertebrate show such as disparity in size between young and adult. The larger the ora, the more likely s/he is to attack and kill others. Back to the Top
Humans and dogs are the lizard’s major competitors; dogs hunt deer and piglets in packs, and even compete for carrion, while people living in the dragon’s habitat illegally poach about 150 deer yearly. Back to the Top