Common Death Adder
The Common Death Adder, one of the most venomous of any snake in the world, could be found in Australia, New Guinea, and a few close islands. Bites left untreated will cause death within 24 to 48 hours. Luckily, there is an antivenom. In addition, we need to note that it’s probably the world’s fastest striking snake.

Common Death Adder
Green Mambas
First of all the planet actually has three kinds of green mambas, because one is just not enough. Green mambas are all extremely venomous, highly hostile, and erratic in disposition — Western, Eastern, and Jameson. How terrific is that? Also all three species are very arboreal, lightning fast, and agile. In addition, their venom works rapidly and the dendrotoxins are even more devastating to the central nervous system, causing extreme neurotoxicity.

Green Mambas