WATCH: Australian zoo keeps koalas cool in 40 degree-plus temperatures

But one zoo isn't going to let the weather stop them from keeping their animals cool.

Symbio Wildlife Park has come up a novel way of keeping their koalas from overheating, thanks to Zoo Keeper Ash Clarke.

The genius is in its simplicity. Frozen water bottles wrapped in a cloth means the animals can chill-out during the extreme weather.

Hats off to Symbio Wildlife Park.