RSPCA New South Wales is urging people to come forward with information about a possible dog fighting ring operating on the far south coast.

The Eurobodalla Shire Council said rangers received an anonymous tip off about a ring in the Moruya area on Tuesday.

Moruya Veterinary Hospital posted on Facebook that medium to large dogs were being stolen for fighting and smaller dogs, cats and rabbits were being taken for baiting.

Far south coast police said they were investigating.

RSPCA NSW chief inspector, David O'Shannessy, said the reports were very concerning.

""Whilst there is some rumour and suggestion circulating on social media, we haven't got any concrete information at this point in time," Mr O'Shannessy said.

"We would reinforce the plea to the public for anyone to come forward with that type of information and report it to the police or the RSPCA so it can be acted upon and investigated."

He said attending an organised dog fight was an offence under the Prevention of Cruelty to Animals Act.

"The maximum penalty for attendance, organising or promoting such an activity is $5500 and or six months imprisonment," Mr O'Shannessy said.

"If, as a consequence of animals being involved in an organised dog fight, dogs are killed or disabled then the maximum penalty goes up to $22,000 and or two years imprisonment."

Pet owners urged to be vigilant

Mr O'Shannessy joined the Moruya Veterinary Hospital in urging pet owners to keep a close eye on their animals.

"It's about ensuring the security of your animals," he said.

"Don't allow them to stray and wander.

"If they're kept in yards, ensure the security of those yards, that they're kept locked and that sort of thing."