Australia has far more deadly animals and climate conditions than just about anyplace else in the world, at least on a per capita basis.
These include four kinds of deadly snakes, two kinds of deadly jellyfish, disease carrying flying foxes, deadly ticks, spiders and centipedes, poisonous fish, octopuses, and fresh water amoebas, sharks, crocodiles, large flightless birds, hail, and extreme heat. And, those of just the highlights.
The toxic and deadly fauna can largely be chalked up to extreme Red Queen type evolutionary competition in a hot, arid environment, and a relatively brief period of high density human habitation to exterminate smaller threats.
The people in Australia, on the other hand, are generally quite nice, even though they have funny accents and judges who wear wigs.