A kangaroo has crashed through the bedroom window of a Canberra family's home before terrorising its unsuspecting occupants.

The family was awoken in the early hours of Sunday morning when a kangaroo burst through the 3 m-high window of the house's master bedroom and onto the bed where Beat Ettlin, his partner Verity Beman and their nine-year-old daughter Beatrix lay.

While the family took refuge under the blankets, the injured animal proceeded to jump on top of them, gouging holes in the furniture and smearing blood all over the walls.

The next thing Mr Ettlin heard was his 10-yearold son Leighton screaming from his bed: "There's a 'roo in my room!"

Mr Ettlin followed the thrashing and bleeding 2 m-tall marsupial and wrestled it into a headlock before dragging it down the hallway and out the front door.

Left wearing just his shredded underpants and with scratch marks on his leg and buttocks, Mr Ettlin described himself as "lucky".

"I had just my Bonds undies on. I felt vulnerable," he said.