An estimated 350 koalas are feared dead in the Australian bushfires, according to Sue Ashton, president of the Koala Hospital Port Macquarie.
"Where we thought we had koalas, we now think they've been incinerated," Ashton told CNN affiliate Nine News Australia on Friday.
"The fire is so intense that what's happening is the fire goes through and the little koalas and other wildlife are just burned to pieces and become ash. So it's absolutely horrific."
The hospital is treating at least 12 koalas, five of which have serious injuries, Ashton said.
Up to 600 koalas live on the Lake Innes Nature Reserve in New South Wales, Ashton said, and two-thirds of the habitat has already burned.