When Tyler Price and his cousin were walking through an overgrown vacant lot in Flint, Michigan, two weeks ago, they came upon an old sign lying on the ground. On a whim, Tyler lifted it with his foot, revealing something very unexpected: a sewer-drain pipe. When the boys looked down the pipe, a starving Pit Bull looked back up at them. It was the start of a journey back to life for the dog now called Mars. . .