When Haley McCormack was coming home from work, she didn't see a venomous copperhead snake lurking by her front porch. But McCormack's pit bull, Arlo, did, leaping into action to save her. Arlo killed the copperhead, though he was injured in the process. Fortunately, Arlo is now recovering. "To think how much loyalty, and love he had for me, to risk his own life for mine, it's really special," McCormack told WTVF.