It's a cold, drizzly night in a forest west of Melbourne. I'm sitting on a damp log, clutching a thermos of lukewarm tea and watching a koala snooze on a branch above me. Suddenly, it lifts its head.

Koalas are a nationally endangered and iconic species in Australia, yet their populations are rapidly declining due to habitat loss, fragmentation, and disease, and very little is known about the fine ...

Koalas have adapted to Australia's rugged terrains. But bushfires, land clearing and other extreme threats can mean they suffer prolonged stress—and this has a significant effect on their wellbeing.