Whowie

The Whowie, a fearsome creature from Australian Aboriginal mythology, resembled a seven-meter long goanna with a huge frog-shaped head and six powerful legs. He lived in a cave on the banks of the Murray River that extended deep beneath the ground, and his trampling on the riverbanks outside his cave formed the sandhills of the Riverina district. Although slow, the Whowie was extremely stealthy and could gobble up a whole tribe in a single meal.

The water-rat tribe, having finally had enough of their suffering at the hands of the Whowie, instructed all the tribes in the area to gather together spears, stone axes, waddies, and many bundles of sticks. With the Whowie at the far end of his cave, they stacked the bundles in a great heap at the entrance and set them alight. After seven days the Whowie finally emerged, blinded and disorientated by the smoke, and the tribes succeeding in killing him with their weapons and freeing the land from a terrible menace.

It is possible that the myth of the Whowie was inspired by real-life encounters with ancient Australian megafauna such as the Megalania.