The St Leonards sheep farmer decided to enter the nationwide competition to find Australia's hardest-working sheepdog after a friend said she thought they would have a chance.

Miss Flower is one of two Tasmanian finalists in the Cobber Challenge, with finals set to be held in August.

She said Hurricane, a 15-month-old border collie, also known as Hurri for short, was one of the hardest-working dogs she'd worked with.

"He's a bit of a windscreen-wiper, he does a lot of running and he never gives up," she said.

Hurri is the youngest dog to enter the competition and will be up against competitor teams from across the country as well as an all-star team made up of former winners.

Miss Flower raised Hurricane from a pup and selectively bred him from her crop of working dogs.

She said she bred his mother and father and was lucky he'd picked up "all the good parts" of both his parents.

"He's also pretty hardy, gets back up and does the best he can."

Miss Flower said experiencing the journey from breeding a pup, through to a working dog, and then retiring that dog was one of the most rewarding things about breeding.

She said Hurricane was a good all-rounder and suited her personality.

"I prefer border collies but with Hurricane, he's a bit more like my partner, it's not an owner-subordinate relationship," she said.

Hurricane's style is more instinctive but she said he picked up what to do quickly.

Cobber marketing manager Kellie Savage said the number and quality of entries this year showed Australian farmers were keen to see their dogs recognised.

You can follow along with your favourite dog by following their progress; each dog will be fitted with a GPS tracker and their work will be uploaded online after each day of the competition.

The 2020 Cobber Challenge All-Stars v Competitors will run from August 17 until September 6.