Incident Controller Mark Mellington said of that number, only a small amount of koalas, kangaroos and wallabies were euthanised due to injuries from the fire.

Reports of animals have increased in the past week as wildlife has moved to look for food and water, animals have succumbed to injuries, and response teams have reached further into fire grounds.

Mr Mellington said authorities established artificial water and food points for koalas, where large numbers were known to live.

"These points will help sustain uninjured wildlife while the landscape recovers," he said.

"We expect wildlife will try to move away from the fire front and burnt areas, so motorists should be extra vigilant for animals along roadsides."

Authorities accompanied Mosswood Wildlife Shelter owner Tracey Wilson to the park where she found 34 alive koalas, as well as wallabies that were "very mobile".

"We saw several mums and bubs and they were all in trees that had green canopies, there was quite a green patch in one area," Ms Wilson said.

But she said three koalas and a kangaroo joey were euthanised due to severe burns.

Ms Wilson said food and water drops were crucial to the animals' survival, and she was working on plans for further water stations.

"We need to focus on helping the ones that are still alive because they will be suffering from dehydration. That buys them some time until we can get them down," she said.

Ms Wilson said she was seeking welders to help construct the water stations.

The Department of Environment, Land Water and Planning warned last week that much of the park was unsafe because of the fire and asked members of the public to stay away.

Ms Wilson said much of the area was clearly unsafe. "The ground was still very hot, walking on it in fire boots you could still feel it warm under your feet," she said.

"While we were there a very large gum tree cracked in half and fell, it was an enormous noise, it was off the track."

Wildlife Response Teams will deem whether fire-affected animals can be rehabilitated and take them to either of two local vet clinics for treatment.

Anyone who sees wildlife that appears to be injured or distressed as a result of the fires, should call the Heywood Incident Control Centre on (03) 5527 0488.

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