dok:
I agree with the observation that there are no wild populations of buffalo on Cape York, but the occasional old bull will go 'walk-about' from the Northern Territory and could end up anywhere.

There was an old boy at Powlathanga Lagoon near Charters Towers more than 20 years ago, used to frighten the crap out of duck-shooters each season, but never actually hurt anyone to my knowledge. He eventually disappeared, probably sank from the weight of No.4 lead pellets in his backside!