Freshwater Sharks ... funny you should mention those ... signs all up and down the Brisvegas River mentioning said Sharks Live Here ... Be Aware ... Bull sharks is what they mean and they were responsible for the pack attack (and resulting death) of a woman on the bayside of Straddie (if my memory serves me) not so long ago. From the reports, 4 or 5 sharks gave the poor woman no hope of survival, and she had her extremeties targeted. That gives me the willies just thinking about it.
At least crocs just grab, crunch, drown I guess.
Further down south it's great whites, drop bears.
Out west it's snakes, wild dogs, dingo's, drop bears.
In suburbia it's psyco nutters, narky spiders, drop bears and vehicle operators.
The list of reasons not to venture out is HUGE. Not gonna stop me though.
Kit_e