King Brown
The king brown snake, also known as the Mulga Snake, belongs to the Elapidae family and is highly poisonous. An estimated 8.2 feet in length, the king brown is the longest venomous snake in Australia. With the exception of Victoria and Tasmania, they can be found all over the continent. The blackish-brown coloration, reddish eyes, and slightly wider head of the king brown help to distinguish it from other large browns.
Papuan Black Snake
An extremely dangerous member of the family Elapidae, the Papuan black snake is found only in New Guinea and Indonesia. It is widely agreed that the Papuan black snake is the most lethal species of black snake in existence. They look just like their name suggests: glossy black on top, with a streak of gunmetal grey running along the underside. Additionally, they can grow to be nearly 7 feet in length.