A hiker has sparked outrage after taking dogs into a Tasmanian national park to complete the arduous but highly prized trek to the top of Frenchmans Cap.

The hike to Frenchmans Cap is considered to be one of Tasmania's toughest. ( Supplied )

The walker posted a video online of him and the canines completing the trek in the Franklin-Gordon Wild Rivers National Park.

It typically takes between three and five days to complete the challenging 46-kilometre round trip and dogs are banned from entering.

In the clip, posted on December 28, the man, who appears to be hiking barefoot, leaves the track to avoid being caught, only to get lost.

"Off the track, because you're not meant to be in a national park with dogs, and I'm running away from the humans," he tells the camera.

His then climbs a tree to get his bearings before continuing on to the summit (1446m) to find it smothered in cloud and lightly snowing.

On his return, Parks and Wildlife Service rangers caught him and issued him with a $330 fine.

"He was required to remove the dogs from the national park and subsequently issued with an infringement notice and fine," said a spokesperson for the Department of Primary Industries, Parks, Water and Environment.

"Detections of people taking dogs in to this area are rare, with most visitors understanding the importance of keeping domestic animals out of an area that is part of the Tasmanian Wilderness World Heritage Area."

Native species in national parks are vulnerable to diseases the pets may carry, DPIPWE says. ( YouTube: Indie and Yanti Laurence )

The YouTube video drew the ire of several commenters.

"Dogs in a national park in Tasmania?" Sean Parker asked.

"That is completely self-indulgent and irresponsible.

"I shouldn't have to list the reasons why but chief amongst them is that even the smell of a predator changes the behaviour of native species on both sides of the track."

When Marc V asked, "What gives you the right to take dogs illegally into the national park?" the poster responded:

"Lived in a swag since I was 14, I sleep under the stars most nights. I've woken up with the big blue gangs boot in my gut many times informing me I have no right to sleep. Dilligaf [Do I look like I give a f@#k].

"What gives the crown the right to call terra nullis [sic] in these lands? Squat all. Gives you no right to be here at all."

"Dilligaf … you don't, but I do," replied Marc V.

The man appeared to complete the 46-kilometre hike to the summit (1446m) in bare feet. ( ABC News: Felicity Ogilvie )

'Pets incompatible with natural values'

Tasmanian National Parks Association president Nick Sawyer said he could not understand why anyone would attempt such a stunt.

"All national parks are pretty clearly signed that no pets [are allowed in] and there's usually a little symbol saying very clearly 'No Dogs'," he said.

"Why someone would choose to so openly defy the rules like that, I just don't know."

Mr Sawyer said the punishment was a fair outcome and sent a clear message to the public that dogs do not belong in national parks.

"As domestic pets, they're really quite incompatible with natural values," he said.

"They're likely to chase wildlife and potentially kill it — wildlife that is not accustomed to having to deal with predators like dogs."

The DPIPWE website also lists that a dog's bark and scent are capable of scaring native wildlife and that local species were vulnerable to diseases the pets may carry.