The horrific wildfires that have been burning across Australia for months now have taken a severe toll on the animals that called the scorched lands home. Estimates of the number of animals killed by the fires range from hundreds of millions, to more than a billion. Volunteers and crews from Australia’s National Parks and Wildlife Service have been doing what they can to help some of the kangaroos, koalas, lizards, and birds that can be rescued and treated. Ranchers and pet owners have been working to keep the animals in their care secure when possible, but many farm animals have been killed as well. As much one third of Australia’s Kangaroo Island has burned so far, with wildlife experts fearing that more than half of the island’s 50,000 koalas have been killed.