It is likely that the belief in dragons originated with pre-scientific discovery of dinosaur bones in different regions around the world. Therefore, "dragons" in the traditional sense no longer exist, if they ever did. However, the Komodo dragons of the Lesser Sunda Islands in Indonesia continue to exist, as they have done for millions of years.
Komodo dragons weigh around 330 pounds and grow to lengths of around 10 feet. They are the dominant predators of their extremely localized habitat. They feed on a variety of animals, including pigs, carrion, each other and humans. Any animal bitten by a Komodo dragon, should it survive, invariably succumbs to lethal blood poisoning as a result of the harmful bacteria in the Komodo dragon's saliva.