G'day,
Since Alison has got started on our creepy-crawlies here are some tales which are all true although they might sound like myths:-

A popular song some years ago started "There was a redback on the toilet seat when I was there last night, I didn't see him in the dark but boy! I felt his bite."

This happens occasionally in areas where there are outside dunnies - possibly less than 1% of our population. It's mostly a male problem of course.

I don't personally know any victims of such attacks, but I have a friend who answered the call of nature in the bush and was stung by a bee, another who picked up a tick.

The best one happened to my mate in Darwin. In his early days there he went bush with a local and at some stage they crossed a creek. Before crossing the local stripped completely, my mate left his underpants on. After crossing they spent some time removing leeches. Much later he discovered his error - the leech was huge and blood red. The bodily part it was attached to was a fraction of its usual size. The leech had to be surgically removed. The nurses in Darwin hospital thought it was a great joke. His new bride didn't - he took weeks to recover.

Then there's the old joke: Two blokes are in the outback; one of them feels the urge and fronts up to a tree. He doesn't see the tiger snake coiled in a fork of the tree. The snake sees the intrusion as a threat to his territory and strikes. He yells to his mate to call the flying doctor for advice. The mate does so and is told "You'll have to suck the venom out or he'll die".
He goes back to the victim who says, "What did he say?"
"He says yer gonna die."

Cheers,
Alan