What substance in a water snake's saliva makes their defensive bite cause wounds to bleed profusely?

Answer

An anticoagulant

The saliva of a water snake contains an anticoagulant, a substance that inhibits blood clotting, leading to the wound bleeding heavily after a defensive bite.

What substance in a water snake's saliva makes their defensive bite cause wounds to bleed profusely?
animalreptilewatersnake