Koalas, also known as koalas, are endemic animals in Australia, distributed in southeastern Queensland, eastern New South Wales, southeastern South Australia and Victoria. Koalas live in open eucalyptus forests and spend most of their lives on eucalyptus trees. Koalas sleep 17-20 hours a day; Night activities; Slow action; Territory, marked by leaving feces at the bottom of the tree; Non-social animals; Adult males threaten their opponents and attract their spouses by shouting loudly, and they are gentle.

Koalas feed on eucalyptus leaves and their shoots. The breeding season of koalas is from mid-spring to early autumn. They are pregnant for 33-35 days, have 1 offspring and occasionally have twins, usually once every two years. The life span of koalas is 13- 18 years.

Effects of Eucalyptus on Koala

Koalas have made many adaptive changes to enable them to cope with such difficult food. Some leaves are obviously completely avoided, and some toxins contained in leaves can be detoxified in the liver and excreted. Dealing with food with such low available energy requires behavioral adjustment, so koalas sleep a lot, up to 20 hours a day.

This has led to a widespread saying that they are paralyzed by eating compounds in eucalyptus leaves. Koalas also make high use of water. Except in the hottest season, they can get all the water they need from the leaves.