What Caused 2 Pit Bulls to Kill Their Owner?

What led two pit bulls to turn on their owner in Virginia? The body of 22-year-old Bethany Lynn Stephens was discovered a mile from her home where she had taken the dogs for a walk in the woods last week. “I have no idea what caused the attack,” Goochland County Sheriff James Askew said during a press conference. “I can tell you that since this happened, I’ve spent a significant amount of time researching attacks by dogs of this sort, and while it is not an everyday occurrence, it’s not rare.”