From the tip of Tassie to the coast of Queensland, it would seem every man and his dog has seen a Thylacine — despite the species being extinct on the mainland for up to 2,000 years.

But did you know the Tasmanian Tiger did in fact make its way across much of Australia and even as far as the Top End?

"I come from western Arnhem land … My family said they lived up on the escarpment country," said author Marie Munkara.

"There's about 13 different rock art sites [in the NT], so they would have been quite prolific."

Though the absolute extinction of the species is often attributed to human contact, Indigenous Australians once lived side-by-side with the Tasmanian Tiger, Ms Munkara said.

Its little-known connection to the Top End will be on show at a thylacine forum in Darwin on Monday night.

"The old days, we used to keep them as pets — we had dingoes as well," Ms Munkara said.

"They didn't cross each other's sort of habitat, the dingoes stayed down in the low-lands."

Tassie Tiger 'sighted' in Katherine, Alice Springs

The last thylacine died in captivity in the 1930s.

There have been more than 5,000 thylacine sightings across Australia within the past 100 years, according to Neil Waters, founder of the Thylacine Awareness Group of Australia (TAGOA).

Understandably, it is a figure questioned by researchers.

"A lot of these animals tend to fly under the radar and people don't realise they're there until one day they're seen in the headlights," Mr Water said.

"So it's entirely possible and probably they're up there in the escarpment country and other parts of the Territory as well."

According to TAGOA, the species has been sighted in Katherine and even Alice Springs.

"[In Alice Springs] some kids were in school and their teacher was talking about extinct animals, and they said, 'no, sorry sir, that's not extinct, we've seen that one'," Mr Waters said.

"Another one was reported by a truck driver who said he saw it crossing the road in Katherine."

Though whether or not the species still roams the Territory is a matter of personal opinion, Ms Munkara believes they could have existed in Arnhem Land as early as 100 years ago.

"It's living memory, so maybe a generation or two or three ago," she said.