Koalas spend most of their time in trees — but are in deadly danger when they descend to the ground, new research shows. The marsupials are an endangered species in Australia and their populations are ...

The most fundamental difference between koalas and bears lies in their reproductive biology. As marsupials, koalas give birth to extremely underdeveloped young after a short gestation period of just ...

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New research revealed that two-thirds of recorded koala deaths occur during the brief period they spend on the ground.