The koala is a rare animal native to Australia, also known as a wombat.The wombat is about 70-80cm long and weighs 8-15kg as an adult.

It is a gentle, chunky, bear-like animal with thick, soft, dense, short grey-brown fur, a greyish-white chest, abdomen, inner limbs and inner ear fur, a pair of large ears with tufted ears, a bare and flat nose and no tail, which has degenerated over the years into a "seat cushion", thus allowing it to sit comfortably and daintily in the trees for long periods of time.

It has stout limbs with sharp, long, curved claws, its claws are sharp and each of its five toes is divided into two rows, one of two and one of three.

It is a good climber and spends most of its time high up in the trees, even when sleeping. Feeding on eucalyptus leaves and shoots, the wombat hardly ever goes down to the ground to drink, as it gets enough water from the eucalyptus leaves and therefore generally drinks very little.

The wombat usually huddles up in a eucalyptus tree and only goes out at night, climbing up and down the branches in search of eucalyptus leaves to feed on. It has a large appetite and a narrow food path, and will not eat anything but eucalyptus leaves. Although there are over 300 species of eucalyptus in Australia, the wombat only eats 12 of them.

He is particularly fond of the leaves of the rose gum, manna and spotted gum trees. An adult wombat can eat around 1kg of eucalyptus leaves a day.

Eucalyptus leaves are juicy and fragrant, containing eucalyptus brain and aniseed terpenes, and as a result, the bear's body always has a rich, fresh eucalyptus scent.

The koala sleeps 20 hours a day, and of the other 4 hours, 2 hours are spent eating leaves and 2 hours lazing around. Koalas are not naturally lazy, but sleepy because the eucalyptus leaves they eat contain anaesthetic ingredients that keep them asleep throughout the day. Koalas do not have natural predators and most die from falls as they get too old to hold on to trees and fall.

The size of a koala's home range depends on the quality of its uncultivated habitat and one important criterion is the density of key tree species on which the koala feeds. A koala's 'home range tree' can be defined as a keystone tree that acts as a boundary line marker to indicate tree affiliation between individual koalas.

These markings are inconspicuous to humans, but as a koala, you can tell at a glance whether a tree belongs to you or to another koala.

Even a year after the death of a koala, other koalas will not move into this empty home area, as this is the time when the scent marks left by the previous koala's body and the claw-scraped bark marks will naturally weather and disappear.