Hey mate, first off nice post.
Im from Australia and i just want to say we have some of the most dangerous animals but it really is quite safe generally.
only one person has died from a spider since 1979 and snakes kill very few people here.
The most dangerous is probably saltwater crocodiles but as long as you keep an eye out for the signs warning of them you should be pretty safe.
my mum actually has a pet crocodile named billy and lots of other reptiles.
this is a picture of him.
You should definitely visit one day and im currently doing a series of posts on Animals endemic to Australia. you should have a look if youre interested :P cheers.