Greyhound Protection League spokesman Aaron Cross with his dog Pax a former racing greyhound. Cross is delighted that greyhound racing is now outlawed in New South Wales.

Greyhound Protection League of New Zealand co-founder Aaron Cross says the New South Wales state government's decision to ban greyhound racing reduced him to tears and it could spell the end of the industry.

"I'm so overwhelmed and happy.

"I've been in tears thinking it was all a big prank. It's super-huge news. I'm totally stoked.

GRANT MATTHEW / FAIRFAX NZ Greyhound racing at Manawatu Raceway, Palmerston North.

"It's an absolutely best case scenario and a very clear message to the whole of this region".

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NSW premier Mike Baird announced the ban on Thursday after the state government considered a 800-page report tabled by a Special Commission into "widespread cruelty" in the industry.

New South Wales Premier Mike Baird has banned greyhound racing.

Cross said the New South Wales' racing industry was ten times the size of the entire New Zealand greyhound racing scene, which generates revenue of around $120 million annually.

Of that, around $20 million was profit.

The Kiwi scene was affected by anything that happened in New South Wales, Cross said.

"The [New Zealand] industry reduced the amount of injury reporting and released nothing about killings or deaths on the tracks.

"We just have to ride the wave. I can't see greyhound racing lasting for more than a couple of years.

"It's toast. It's gone."

Greyhound racing was pointless, cruel and inhumane, Cross said.

New Zealand has seven tracks, four in the North Island and three in the South Island, with races held almost every day except Saturdays.

The industry uses about 2000 dogs to operate and imports about 300 hounds each year from Australia.

Cross said he expected the number of imports to New Zealand to dramatically increase and "flood" the Kiwi race scene.