Being predatory lizards, goannas are often quite large, or at least bulky, with sharp teeth and claws.
Do goannas bite humans?
Goannas can grow up to 2m (6.5ft) in length, though most varieties are under 1m, and rarely attack humans. The rescue service described the attack which took place in Flametree near Airlie Beach, as "a horrific and freak ordeal".
What happens if a goanna bites you?
“I wouldn't say they were tame ... but they weren't scared enough to stay away,” he said. According to Mr Meney, goanna bites can pose a risk of infection. “They tend to feed on wombat or kangaroo carcasses on the side of the road, so rotten bacteria can pose a risk,” he said.