A pit bull named Lilly risked her life to pull her unconscious owner from the path of an oncoming freight train last week. The loyal dog suffered serious injuries but saved her owner. Christine Spain was walking home with Lilly when she fell unconscious onto the railroad tracks in Shirley, Mass., the Sentinel and Enterprise reports. Before long, a freight train was barreling towards them. "I don't know if she collapsed or what happened, but she passed out," Rob Halpin, spokesman for the Massachusetts Society for the Prevention of Cruelty to Animals told the Sentinel and Enterprise. "The engineer, the only witness, told police he saw a dog frantically pulling at a woman as he drew closer. He did everything he could. He heard a thump and thought he hit both." The engineer hit the brakes and got off the train to find Spain unharmed. The 8-year-old pit bull suffered severe injury to her right foot. She also fractured her pelvis in multiple locations and sustained other internal injuries. a Boston police officer and Spain's son -- had rescued Lilly a few years ago as a therapy dog for his mother who suffers from alcoholism.