. " the height of six weeks of training for a scheduled fight, a pit bull would be on the treadmill for as long as two and a half hours a day, in 30-minute segments.Rolling a fighting dog is a process that puts a dog in training in the ring with another dog to measure its abilities and its willingness to fight.We would roll a dog for, maybe, 10 minutes to see how ready it was, Taylor says.As the" . . .