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How do koalas digest poisonous eucalyptus leaves?

AnimalsMammals

Quick Answer

Koalas rely on a specialized digestive system and gut microbes to break down tough, toxic eucalyptus leaves.

The Full Story

Koalas eat a diet that would be toxic or hard to digest for many other mammals. Their enlarged caecum and long intestines help ferment plant material, while gut bacteria assist in processing the leaves’ chemical defenses. Koalas also have a very slow metabolism, which helps them survive on a low-energy food source. This allows them to spend much of the day resting and conserving energy.

Key Facts

1.Koalas eat mostly eucalyptus leaves
2.Their digestive tract is adapted for fermentation
3.Gut microbes help detoxify and break down plant compounds

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"How can an animal live on leaves that are basically plant toxins?"