The world's largest lizard, the Komodo dragon, has a snake-like venom in its bite which sends victims into shock and stops their blood from clotting, according to Australian research.
It had been widely believed that deadly bacteria in the carnivorous lizard's mouth helped kill its prey.
But magnetic resonance imagery has for the first time uncovered venom glands containing a shock-inducing poison which increases blood flow and decreases blood pressure, scientists say.
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