Komodo dragons have dangerous bacteria in their saliva. Scientists have identified 57 of them. One of the most dangerous bacteria in Komodo dragon saliva appears to be a kind of "Pasteurella multocida". These bacteria cause disease in the blood of their victim. If a bite does not kill an animal and it escapes, it will usually die within a week from infection. The Komodo dragon seems to never get sick from its own bacteria. So, researchers have been looking for the lizard's antibacterial. This may be used as medicine for humans.