The wombat is a mammal of the family wombatidae in the order Diptera. The fur is gray brown. The lifespan is about 15 years. The wombat is mainly distributed in forests, hills, and coasts of Oceania. It inhabits forests, mountains, and wilderness, and occasionally appears near farmland. Cave dwelling, solitary camping, digging and living at night. Herbivores feed on grass, herbaceous plants, bark, and roots. The wombat was found in Australia 20 million years ago, but it was not until July 1797 when a European merchant ship died in the Bass Strait of Australia and the sailors on board fled to a nearby island that they first saw this animal.

Kangaroo is a mammal belonging to the family Macrouridae in the suborder Macrouriformes of the order Diptera. Kangaroos jump the highest and farthest. Female kangaroos have a front opening pouch, hence the name kangaroo. Kangaroo refers to any marsupial belonging to the kangaroo order, mainly distributed in parts of mainland Australia and Papua New Guinea. Some of these species are unique to Australia. Kangaroos are herbivores and also feed on fungi. Kangaroo is a symbol of Australia, appearing in Australian currency patterns and also becoming one of the animals on the Australian national emblem.

It is a mammal of the platypus genus in the platypus family. The platypus is named after its snout that resembles a duck's beak. It is a mammal of the platypus genus in the platypus family. The platypus is named after its snout that resembles a duck's beak. It is a mammal of the platypus genus in the platypus family. The platypus is named after its snout that resembles a duck's beak. Mainly foraging underwater, preying on invertebrates such as worms, insect larvae, freshwater shrimp, and crayfish. The platypus holds an important position in Australian culture and often appears in mythological stories, songs, poems, or stamps. At the beginning of the 20th century, humans were still hunting platypus for fur. Except for the extinction of populations in southern Australia, platypus were still common in their distribution areas

The mole rat is a mammal of the family Hylidae in the order of monotremes. Body length is 40-60 centimeters. The mole rat is distributed in eastern Australia, Tasmania, and New Guinea. Sleeping during the day and foraging at night. Body temperature changes with the temperature of the surrounding environment. Run very fast and climb trees very well. Even if you don't consume food for a month, you can still survive in cold weather. The main food is ants, which cannot be chewed and can be crushed with their tongue. The echina is one of the most primitive mammals and one of only two monotremes in the world.