Huntsman spiders aren't the ones to worry about in Australia. The Sydney Funnel Webs are the scary SOBs. Highly venomous, aggressive as hell, adult fangs long enough to pierce leather boots and even toenails... oh, and they can live underwater for a couple of days, breathing from a trapped air bubble.
One of my aunts in Oz, gave me a book of all the dangerous creatures of Oz. Hmmm... so everything on land and in the water can kill you? Got it. Brown snakes, Taipans, Funnel Web spiders, Box Jellyfish, Irukandji, blue-ringed octopus, sharks, kangaroos, cassowaries, salties.
Even the cute looking ones can be dangerous. The book had an account of someone who got too close to a wombat, trying to take a photo of it. While squatting to take the photo, the wombat charged and bit they guy, taking a chunk out of his inner thigh. His comment was, "I'm glad the bite wasn't a few inches over.".
Had a fun time there nonetheless. Just had to be cautious in the outdoors (and indoors in Sydney, eg. getting in the habit of tapping shoes out before putting your feet in them, which wasn't difficult, since anyone who's been camping a lot has learned to do that).