Several hundred people have rallied in Hobart in support of a ban on greyhound racing.

New South Wales is set to become the first state to ban the sport from July 1 next year and the ACT is following suit.

The Hobart rally, held on Parliament Lawns, attracted dozens of dog owners and their greyhounds.

It was part of an international "March for the Murdered Million" event, which was also held in other Australian states such as South Australia and Queensland.

Veterinarian and greyhound owner Dr Raj Wicks praised the suitability of the breed as a pet.

"They really are couch potatoes," he said.

Dr Wicks spoke about his greyhound, Rosie.

"She comes to the clinic with me most days of the week, and if you come down there she's probably just sitting on her bed out the back there waiting to greet all those other pets coming through.

"As you can see, I've got two daughters, and Rosie would just love to sit with them everyday."

Dr Raj encouraged people at the rally to adopt a greyhound.

"With kids, with families, they're really, really great." he said.

Federal independent Andrew Wilkie also addressed the crowd.

He said Tasmania must follow the lead of New South Wales and the ACT and shut down the dog racing industry.

"This is big money, this is big business, these are big and powerful interests," he said.

"What we are wanting to do is threatening them and they don't like it."

Mr Wilkie said he has heard first-hand that live baiting and blooding occurs in Tasmania.

"It is not just about a few rogues," he said.

"It is systemically cruel ... and don't you believe it when people say they all love their dog."

'No live baiting in Tasmania'

Graeme Barber from the Tasmanian greyhound industry said calls to shut down the industry ignored the reforms made over the past five years.

He said the industry had zero tolerance of animal cruelty in Tasmania and denied live baiting was conducted in the state.

"A recent investigation by the former director of racing and the chief veterinarian for Tasmania found no evidence of live baiting in this state," he said.