Australia is very famous because of it's dangerous animals that can be found throughout the country.
They do have a lot of dangerous and poisonous animals; however most of them are easily avoided with a little common sense. Most do not live in cities, and types of animals vary depending on which part of Australia you go to.
Remember that Australia is a huge country; they have variations in climate and habitat. They also do get snow in many places each winter. Anyway, most of Australians manage to live there relatively incident-free.
For instance, no one has died from a Spider bite ever since 1981! Ever since anti-venoms were introduced, the fatality rate has diminished to practically zero.