Kangaroo corpses lay scattered by the roadsides while wombats that survived the wildfire's onslaught emerged from their underground burrows to find blackened earth and nothing to eat.

A goat is seen in a field burnt out by bushfires in a town near Melbourne February 11, 2008. [Xinhua]

Wildlife rescue officials on Wednesday worked frantically to help the animals that made it through Australia's worst-ever wildfires but they said millions of animals likely perished in the inferno.

Scores of kangaroos have been found around roads, where they were overwhelmed by flames and smoke while attempting to flee, said Jon Rowdon, president of the rescue group Wildlife Victoria.

Kangaroos that survived are suffering from burned feet, a result of their territorial behavior. After escaping the initial flames, the creatures -- which prefer to stay in one area -- likely circled back to their homes, singeing their feet on the smoldering ground.

"It's just horrific," said Neil Morgan, president of the Statewide Wildlife Rescue Emergency Service in Victoria, the state where the raging fires were still burning. "It's disaster all around for humans and animals as well."

Some wombats that hid in their burrows managed to survive the blazes, but those that are not rescued face a slow and certain death as they emerge to find their food supply gone, said Pat O'Brien, president of the Wildlife Protection Association of Australia.

The official human death toll stood at 181 from the weekend's deadly fires and authorities said it would exceed 200. While the scope of the wildlife devastation was still unclear, it was likely to be enormous, Rowdon said.

"There's no doubt across that scale of landscape and given the intensity of the fires, millions of animals would have been killed," he said.

Hundreds of burned, stressed and dehydrated animals -- including kangaroos, koalas, lizards and birds -- have already arrived at shelters across the scorched region. Rescuers have doled out antibiotics, pain relievers and fluids to the critters in a bid to keep them comfortable, but some of the severely injured were euthanized to spare any more suffering.

"We've got a wallaby joey at the moment that has crispy fried ears because he stuck his head out of his mum's pouch and lost all his whiskers and cooked up his nose," Rowdon said. "They're the ones your hearts really go out to."

In some of the hardest-hit areas, rescuers used vaporizing tents to help creatures whose lungs were burned by the searing heat and smoke.