Venomous

Of the world's top 10 most venomous snakes, a significant number are found in Australia, including the Inland Taipan and Eastern Brown Snake. While bites are rare due to effective anti-venom and cautious human behavior, their potency is unparalleled.

This unique semi-aquatic animal is a monotreme, a group of mammals that reproduce by laying eggs instead of giving birth to live young. They also possess a venomous spur on their hind legs, making them even more unusual among mammals.