For a komodo dragon that weighs 100 pounds, it means that their dinner could be 80 pounds worth of unsuspecting animal! If you weight 100 pounds and ate that much food, it would take almost 160 double cheeseburgers to do it! 7. They Live How Long? Komodo dragons have been known to live as long as 50 years. During the time, you can find them do a number of different activities. For their size, komodo dragons are remarkably good swimmers.