Furry Avengers! Animal SuperheroesWhether taking a bullet or fending off attackers, these dogs and cats protected their owners when they needed them most


When her owner, Christine Spain, lost consciousness on a set of Massachusetts train tracks, 8-year-old pit bull Lilly managed to drag her body to the side before colliding with an oncoming freight train. "We're supposed to be strong for her, and Lilly's been the one who's helped us through this by her incredible strength," Spain's son David Lanteigne told PEOPLE. "It's truly amazing."