CASES against greyhound trainers videotaped live baiting could crumble if the footage is ruled inadmissible because it was secretly filmed.
But RSPCA Queensland spokesman Michael Beatty said the joint police and RSPCA greyhound racing inquiry taskforce was continually gathering more evidence.
He expects there to be more arrests.
But Mr Beatty is unsure if it means the end of greyhound racing.
He said some people raced for the pleasure of it as a hobby, while others took it seriously.
Mr Beatty said sometimes things became "muddied" when money was involved.
He praised the Palaszczuk Government's announcement of a commission of inquiry to replace the current review of the greyhound racing industry.
"We certainly welcome the fact the government have done what it's done," Mr Beatty said.
"We think it's a step in the right direction."
So far 14 people have been arrested on 53 charges, including 37 of serious animal cruelty.
Racing Queensland has warned off six trainers for life and suspended 27 trainers from the industry.