Photo taken on Dec. 6, 2020 shows a female Koala in health check in Melbourne, Australia. (Photos: Xinhua)

Photo taken on Dec. 6, 2020 shows a koala with bandaged paws sitting amongst gum leaves near the Melbourne Zoo Vet Clinic in Melbourne, Australia.

Photo taken on Dec. 6, 2020 shows a Koala being treated for injuries caused by bushfire at the Melbourne Zoo Vet Clinic in Melbourne, Australia.

Zoos Victoria senior veterinarian Leanne Wicker releases a koala in East Gippsland region, Victoria, Australia, on Dec. 6, 2020.

Photo taken on Dec. 6, 2020 shows a koala back to wild in Healesville Sanctuary, Australia.

Experts unload a koala from a truck ahead of its release in East Gippsland region, Australia, on Dec. 6, 2020.