Two men have been told they face jail terms after admitting being involved in a dog-fighting ring, which was exposed by an RSPCA investigation.
Gary Adamson, 38, from North Yorkshire, admitted six charges and Kenneth King, 35, from Newark, admitted eight.
At Lincoln Crown Court, they were told prison sentences were a certainty due to the seriousness of their offences. Both will be sentenced on 25 September.
The charges faced included taking part or being present at dog fights.
District Judge Richard Blake told Adamson, of Ramsey Crescent, Yarm, and King, of Main Street, Ragnall: "You have entered pleas to serious matters and you can be under no illusions as to the gravity of your situation.
"Clearly my starting point has got to be custody."
Christopher Burgess, 42, of Longstone Way, Ladybrook, Mansfield, Nottinghamshire, who admitted keeping a banned dog, was told he would probably get a community sentence.
He will be sentenced along with Adamson and King.
On Tuesday the trial is due to begin of three people who deny being part of the same ring.
A woman, a man and a youth face charges of causing unnecessary suffering to an animal and possessing training equipment for dog-fighting.
Claire Parker, 44, of Kexby Lane, Kexby, Lincolnshire, faces three charges in connection with dog-fighting, while Mohammed Farooq, 33, of Daniels Road, Bordesley Green, Birmingham, is accused of five charges related to the ring.
A 17-year-old youth, who also admitted keeping a banned animal and who cannot be named for legal reasons, faces three charges connected to illegal dog-fighting.