The Australian wildfires have already taken 174+ human lives. The fires are moving so rapidly that people in cars are being over taken by the fires and dying.
The slower moving wildlife such as the Koala bear is not fairing very well. They have little or no chance of out running a fast moving brush fire. About 20 years ago I remember seeing whole herds of sheep that had been burned to death or were still alive and their coats smoldering from the fires. I have not seen videos of that yet but I am sure to see something like that as more news comes pouring out of Australia.