Koalas

Koalas survive on a diet of eucalyptus leaves and can eat up to a kilogram a day! Pretty impressive, considering eucalyptus is poisonous to most animals.Their special fibre digesting organ, called a caecum, helps to detoxify the chemicals in the leaves.

However, they can be quite picky eaters, eating less than 50 of over 700 eucalypt species. Even then, they’ll often choose leaves at the top of the tallest trees that contain more liquid and nutrients – only the best for Australia’s koalas!