PIGS might not fly, but they occasionally fly off the handle like one feral porker in north Queensland.

Weighing in at over 100kg, he has terrorised a town north of Cairns, rampaging through a hospital and attacking the locals.

Apparently alarmed by a fire in a nearby sugar plantation, the pig lumbered through the front doors of the Mossman Hospital on June 26, announcing his presence with a chorus of squeals and oinks.

Increasingly agitated by a lot of people in a confined space, he made an emergency exit by smashing through a window and fled down the street, chased by two men in a truck who hoped to herd it back into bushland.

But the porker scurried across the Captain Cook Highway, dodging traffic before splintering the front gate of Ken and Zhanna Belsar's home.

Mrs Belsar was in the front yard at the time and tried to fend the beast off with a garden shovel.

But the pig broke the shovel and bit Mrs Belsar on the leg before she managed to scramble back inside her house.

"It was terrifying, I screamed so loud the whole neighbourhood heard it," Mrs Belsar said.

Her husband said it was then that the two men who'd chased the pig arrived on the scene.

One of them, a big fellow, tried to grab the animal, but he couldn't hold on and it tossed him several metres.

Finally the pair were able to subdue the distressed animal and kill it.

"We can laugh about it all now but at the time it was really frightening," Mr Belsar said.

"I don't know what we would have done if those two blokes hadn't been there because we had this feral pig stuck in our back yard and the poor thing was really agitated."

Mrs Belsar later went to the hospital to have her wound treated.

"She's from the Ukraine and they don't have anything like this over there so it was pretty scary for her," her husband said.

Read the local report about the pig running wild at Mossman Hospital at cairns.com.au