HEARTBREAKING footage shows the charred remains of dead koalas and kangaroos - as experts fear the devastating Australian wildfires have killed a BILLION animals.

A horrific video shows the chilling scenes of burnt animal corpses lining the road of Batlow in New South Wales - one of the areas worst hit by the infernos over the weekend.

10 A male koala named Guzzle is being treated by at the Mallacoota Wildlife Centre after being rescued by the bushfires Credit: News Corp Australia

10 Wildlife carers applied burn cream onto Guzzle's face to help with his injuries Credit: News Corp Australia

10 Devastating footage shows the charred remains of koalas and kangaroos at the roadside in Batlow Credit: Facebook/The 'new' Batlow Hotel

10 The heartbreaking scenes have been described by witnesses as "absolutely gut wrenching" Credit: Facebook/The 'new' Batlow Hotel

It comes as 24 people were killed and 2,000 homes were destroyed in the horrifying bushfires.

Sydney was declared the hottest place on earth yesterday with temperatures rocketing to nearly 50C as fires continued to rip through the area.

Thousands fled for their lives through the chocking smoke after huge areas between Bateman's Bridge and the border with Victoria state were ruled "unsafe".

Posting footage of the remains in Batlow ABCcameramatt said: "Absolutely gut wrenching drive into Batlow this morning. Never seen anything like it.

"It’s completely heartbreaking. Worst thing I’ve seen. Story must be told."

Experts fear a billion animals including mammals, birds, reptiles, frogs and insects have perished in the bushfires, according to Sky News.

Speaking to the broadcaster Stuart Blanch of WWF Australia said many animals were well-adapted to cope with bushfires but the current blazes were "too big and too hot" to escape.

He said: "Animals that make it through the fires will continue to die in the next weeks and months because of dehydration, starvation, disease and being easier prey for feral cats and foxes.

Thousands of firefighters are still battling more than 140 infernos Credit: Getty Images - Getty

"Even animals that are not being burnt to death are cooked because of extreme temperatures, or they get very confused and lost because of the smoke haze so our animals don't stand a chance from these mass mega-fires that burn flames up to 200ft high."

Experts warn some animals could be on the brink of extinction.

The destructive wildfires are thought to have killed off a third of Australia's Koala population whose numbers are already dangerously low.

Around 8,000 of the furry creatures are believed to have perished whilst there are also huge fears over the western ground parrot, the eastern bristlebird and the Kangaroo Island dunnart.

The blazes are creating their own storms because of the heat they are generating - with fire tornadoes causing some of the biggest fires to merge.

The premier of New South Wales declared a state of emergency after the devastation of more than 200 fires this week.

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New South Wales Rural Fire Service said there were still 146 fires raging with 65 blaze not yet contained.

More than 2,700 firefighters are continuing to battle the flames.

A fire service spokesman added: "Conditions have eased today and firefighters have gained the upper hand on several dangerous fires.There are no total fire bans in place for Monday."

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