Koalas may seem to be always slow and sluggish, but in reality they are actually very agile. Whenever you see a koala in a nature documentary sitting peacefully in its tree, this is because they have an extremely low metabolic rate. The contents of eucalyptus are extremely high in fiber, and extremely low in nutrition. To conserve energy, the koalas spend most of their time sleeping, while their digestive system works extra hard to digest their food.
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