>> i saw a story after it initially happened. my heart dropped. i was really, really upset and sad. and i just couldn't believe it. >> tell the story. what happened to him? >> well, the humane society of missouri animal task force rescued trooper after he was dragged nearly a mile on a major interstate and they immediately took him to the humane society of missouri's animal medical center. >> we should point out, he was dragged because somebody took his leash and tied him to the trailer hitch of a vehicle. >> exactly. and the man didn't know it. he gets in his truck and drives. nearly a mile down a major interstate before people are flagging him over. >> trooper is not used to being up at this hour. >> he tells his story in trooper's triumph, which is remarkable. it is awesome. >> at the humane society's medical center, he had seven major surgeries. 20 laser treatments.