Organisers of an annual greyhound adoption day in Sydney say they have had a bigger turnout than usual following the decision to shut down the greyhound racing industry in New South Wales.

More than 100 people visited Wentworth Park racetrack to look at greyhounds up for adoption.

The RSPCA estimates there are between 6000 and 10,000 greyhound race dogs in NSW and those animals will have to find a home between now and July 2017 when the ban takes effect.

The chief vet at Greyhound Racing NSW - which hosts the annual Sydney event - said there was greater interest in greyhound adoption since the ban was announced.

"I don't have exact numbers on it but certainly we've had a lot of enquiries into our greyhound adoption program, people asking how they can help and the turnout today shows there's a lot of interest," Liz Arnott said.

Diane Manoughain was at the event with her four-year-old daughter Lottie and is considering fostering a greyhound.

"We've always wanted a rescue dog and we've been sort of thinking about greyhounds but bearing in mind Lottie's only four, we wanted to come and see how she was against them, how big and how gentle they are," Ms Manoughain said.

"They're just beautiful, they just want cuddles … you find out they are actually a really good pet for an apartment, which I didn't know."

She said the Government had been right to ban greyhound racing because the industry was unable to prove it had quashed animal cruelty.

More than 100 people were at the adoption day event. ( ABC News: Lucy McNally )

Connie and Jeremy Wu, looking to become first-time dog owners, also attended the event.

They said the racing ban would raise awareness of the need to adopt greyhounds as well as their true nature.

"I guess because of the racing industry, they might appear more vicious than they actually are," she said. "They are actually quite gentle and loving."

"Overall I think it's [the ban] a good thing, but I think it needs time and a phase approach and [to be] properly managed so the dogs are actually not worse off if they close the whole industry."

Similar adoption days were held all over the state. The organisation said it holds one every month.

"Three hundred and thirty-three dogs were adopted in the last financial year through GAP – Greyhounds As Pets – run by Greyhound Racing NSW," a spokeswoman said.

"Every dog out for adoption gets adopted; there's no euthanasia.

"The dogs are kept and taken care of through the program otherwise."

The industry is fighting the racing ban, planning legal action and hoping to present evidence that it is reforming when representatives have their next meeting with the Premier Mike Baird.