Alone in the Food Chain - Koala, Australia

The koala bear is not a bear, but a marsupial. It is the only mammal which can survive on a diet of eucalyptus leaves. Their digestive system is especially adapted to detoxify the poisonous chemicals in the leaves. They sleep up to 20 hours a day to store the little energy they get from the low nutrient diet.

In real life, they are as cute as you imagine them!

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