Police and the RSPCA are investigating the discovery of greyhound carcasses in bushland near Bundaberg.
The investigation is being conducted as part of the Joint Greyhound Racing Inquiry Task Force.
RSPCA Bundaberg received initial information that the carcasses had been found in the Coonarr area.
RSPCA Inspectors attended the scene where at least 55 greyhound carcasses have been found in various states of decomposition.
Investigations are ongoing.
Anyone with information that might assist investigators is asked to contact Crime Stoppers on 1800 333 000.
A member of the public discovered the carcasses on Tuesday March 31 in the Wild Flower Reserve on Coonarr Beach Road in Coonarr.
They were in varying states of decomposition.
RSPCA spokesman Michael Beatty said it was believed the dogs were killed before the Four Corners special on live-baiting in the greyhound racing industry was aired on February 16.
"Unfortunately as I think most people would be aware, there's always been a lot of wastage in the greyhound industry," he said.
"The indications are that these may just be young dogs that didn't have the speed, basically. But that's really all we know."
Autopsies will be carried out to determine the cause of death, and the dogs' ages.