Kirrily McWilliams was left with a 12-inch scar after the grey kangaroo attacked as she walked down her driveway near Port Macquarie.

McWilliams had first encountered the raging roo in her backyard just two days before the attack, and a day earlier the marsupial had hopped through her fence and made a grab at her dog.

The kangaroo began clawing at McWilliams as she made her way to a bus stop to pick up her daughter from school.

McWilliams sustained a large gash and scratches on her back in the incident. After striking McWilliams repeatedly with its hind legs, the kangaroo bounded away.

However, this was not to be the last of the crazed kangaroo. As McWilliams recovered in hospital, the kangaroo came back and approached her husband, who was able to keep it at bay with a shovel.

McWilliams had contacted the National Parks and Wildlife Services (NPWS) before the assault, but was told the animal would go away of its own accord.

But when it attacked a third person just a day after it squared up to Mr McWilliams, the NPWS issued a permit to shoot the kangaroo.

McWilliams told the press: “I’m for protecting kangaroos but there seems to be nothing in place to help people.

“I had to be injured before they did anything. I have three children and it could have been one of them.”

Eastern greys are considered dangerous and official policy is for people to avoid conflict with them. They can weigh up to 145lbs and reach near 6ft tall.

Someone shoulda tied that kangaroo down sport, eh Rolf?