The amazing ability of dogs to detect and track down specific scents could have profound effects on Australia's koala population. Perhaps surprisingly, koalas are particularly prone to chlamydia.

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Dogs who have been trained to find and save koalas in the wild are helping to rescue the animals in Australia's devastating bushfires. Dogs who have been trained to find and save koalas in the wild ...

A koala-sniffing dog with a California connection is helping animal rescuers track down wildlife that lived through the deadly wildfires that have ravaged Australia in recent months. The dog named ...