The Kangaroo Island dunnart lives only on Kangaroo Island, off South Australia. In 2019–2020, catastrophic bushfires swept across the island, burning over 90% of the dunnart’s habitat. The species was feared extinct, but a few were found to have survived — perhaps just 50–100 individuals.

The long-tailed planigale — the world's smallest marsupial — measures just 5 centimetres (2 inches) in length. Its extremely flat, wedge-shaped head allows it to squeeze into narrow cracks in the soil, offering refuge from predators and the daytime heat of northern Australia.

The brush-tailed phascogale is a carnivorous, tree-climbing marsupial from Australia. It is able to erect the long, black hairs on the end portion of its tail — this 'bottle-brush' tail is used to draw a predator's attention away from its body.

The jaws of a Tasmanian devil can open to an 80-degree angle, able to deliver the strongest bite of any carnivorous mammal relative to body size. Nicknamed the "Australian hyena", the devil is a bone-crunching scavenger, gorging on dead bodies before they can fester and spread disease.