8. Australian Brown Snake
While it is native to Australia, it can also be found in Papua New Guinea and Indonesia. The brown snake can be very aggressive and will chase its target in a very swift manner. It will strike a target multiple times making survival even more difficult. Its venom is a neurotoxin and blood coagulant. A brown snake will more likely stand its ground for a fight. There is no antivenin formulated against brown snake thus making it more fatal.