New study shows that it is not the bacteria in the bite of a komodo dragon that can kill you but their venom. Researchers found that the lizards actually have the most complex venom-delivery system known in reptiles, which had been overlooked because the animal's teeth are so different than those of most venomous creature. The dragons produce toxic proteins—not unlike those of gila monsters and some snakes—that cause a drop in blood pressure and decreased clotting. Specialized ducts move the venom from five separate small compartments to openings between serrated teeth. After venom enters a substantial wound, victims can go into shock and bleed to death.

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