Meet Kevin Pugh, 12-year-old couch potato. Now meet Cromwell, his part beagle, part potato chip dog. Kevin's looking forward to spending his summer doing as little as possible. Unfortunately, Kevin's father, former Chicago Bears star player/super-sports fanatic, Howie Pugh, feels differently. So does Cromwell, who has suddenly and mysteriously developed a fascination with agility competitions: running up seesaws, leaping over hurdles, soaring through...