This relax Komoto Dragon can be found at the Shark Reef at Mandalay Bay in Las Vegas. My four year old grandson thought he was smiling at us. More than likely he was laughing at us for coming out in the 105F heat.
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As to your question, below is a quote from Wikapedia.
Komodo dragons also possess virulent bacteria in their saliva, of which more than 28 Gram-negative and 29 Gram-positive strains have been isolated. These bacteria cause septicemia in their victim; if an initial bite does not kill the prey animal and it escapes, it will commonly succumb within a week to the resulting infection. The deadliest bacteria in Komodo dragon saliva appears to be a very deadly strain of Pasteurella multocida, from studies performed with lab mice. Because the Komodo dragon appears immune to its own microbes, much research has been done searching for the antibacterial molecule in the hopes of human medicinal use.
You never want to be infected by a member of the Pasteurella family. I should have added that the Pasteurella family includes bubonic plague.