Pet owners are not expected to abuse their pets.
Brian is behind on rent and has a pet Rottweiler named Buster.
Brian needs to make money to pay rent.
Brian decides to train Buster to be a service dog and rent him out.
Brian enrolls Buster in an underground dog fighting circuit.
Buster enjoys all the attention and treats given to him by those Buster helps.
Buster is terribly injured in the ensuing fights and has to be put down.