How did one island sheepdog come to save an entire colony of penguins? Verica Jokic reports on the unlikely south-west Victorian story that inspired the movie Oddball.

Allan Marsh is not your average chook farmer. He uses colourful language, has strong opinions and thinks if he can inspire just one person to challenge a bureaucrat, then he's lived a good life.

Swampy, as he likes to be called, and his old dog Oddball are also the inspiration for Shane Jacobson's latest movie, Oddball.

Oddball is a maremma sheepdog. The breed has been used for centuries in Europe to protect herds of animals from wolves and foxes.

A couple of penguins came up and saw the dog and just snuck back down again but then one confident one just strolled straight up and old Oddball went to give it a sneaky sniff on the backside and the penguin gave it a squawk and went for her nose. David Williams, scientist

'A neighbour had a maremma dog and he told me how good they were with the chooks,' says Marsh.

'I used to spend my nights up with a rifle shooting foxes. One night I noticed the neighbour's dog barking and the light went on in my head. I realised he was barking at the same thing I was trying to shoot.'

Marsh got himself a maremma dog named Oddball, and after six months of training and bonding with the chickens, he had no need to shoot foxes.

A short distance from his farm, and just off the coast of Warrnambool in south-west Victoria, lies Middle Island.

For decades the island has been home to Little Penguins that nest there six months of the year. At one point up to 200 penguins lived on the island.

'The old fishers used to tell me when they were going out and loading up their boats early in the morning they couldn't hear themselves think for all the penguins squawking,' says Marsh.

However, in recent years penguin numbers began to drop off.

At low tide, foxes were able to make their way to the island, where they attacked the penguins and reduced their number to less than 10.

David Williams was a university science student working on Marsh's farm at the time.

'I read the article about the island and Swampy said, "what they need on that island is a maremma dog."'

Williams wrote an essay for one of his science subjects about the plausibility of Marsh's idea.

His father, who was a wildlife officer with the Victorian Department of Environment and Sustainability at the time, supported the idea, and after some effort, Warrnambool Council agreed to place a maremma dog on the island.

Marsh says it wasn't the easiest of things to achieve.

'The problem was I was an amateur and not involved in the bureaucracy, and here I was telling bureaucracy how to suck eggs and the bureaucracy quite frankly didn't like it.'

Oddball was the first dog on the island and Williams says her first encounter with the penguins was incredibly smooth.

'When we all sat out there at night waiting for the penguins to come up on the island we were all shaking in our boots wondering how it would go really because that was the big unknown.'

'A couple of penguins came up and saw the dog and just snuck back down again but then one confident one just strolled straight up and old Oddball went to give it a sneaky sniff on the backside and the penguin gave it a squawk and went for her nose.'

'Oddie popped to the side and the penguin continued on, so it was really quite uneventful I guess,' he says.

Maremmas are known for being guarded with people, but Marsh says that's a misconception.

'They're big pussy cats once they know you. They love nothing more than a rub on the tummy. If you can convince a maremma that you're going to rub its tummy, you've got it for life.'

Oddball stayed on the island only until Williams found replacements for her and trained them for the job.

He says maremmas are great dogs for large outdoor spaces, but they're not a good match for backyards or small islands because they're noisy and bark a lot.

The island now has a pair of sister maremmas who guard the penguins for six months of the year.

Luke Hura is a dog trainer who worked on Red Dog and trained two dogs for Oddball's role for the movie.

'When it gets focused, man, you have trouble shifting it,' he says. 'It's got to think for itself and it's got to react on its own.

'Whereas sheepdogs ... they can take instructions and they are working with someone all the time. These dogs have to be out on their own and they've got to think for themselves and act very quickly otherwise livestock are going to get lost or they're in trouble.'

'They're aloof but highly intelligent.'

The two dogs he trained for the movie are now his own dogs and Hura says he can't part with them.

Filming for the movie has now finished, but before it began Shane Jacobson and his brother spent some time with Marsh.

'They wanted to pick my brain, steal my one-liners and generally get a feel for things,' he says.