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They have sharp incisors to clip leaves at the front of the mouth, separated from the grinding cheek teeth by a wide diastema.

while the brain's two cerebral hemispheres are like "a pair of shrivelled walnut halves on top of the brain stem, in contact neither with each other nor the bones of the skull. It is the only animal on Earth with such a strangely reduced brain

Koalas spend about three of their five active hours eating