WWF calls the number 'deeply disturbing' for a species already in trouble
He sniffs out the scent of their fur or their faeces
Wildlife volunteers will begin a rescue operation for the surviving koalas
High temperatures are not unusual in Australian summer with bushfires common occurrence
The two-year-old was eventually found stuck in a nearby tree after a 'Houdini-style' escape
The woman was subsequently arrested over 'outstanding matters', police say
The video of the Koala uploaded last week has been viewed more than 3.2 million times
The marsupial was recently admitted to the Australia Zoo Wildlife Hospital after apparently being hit by a car