National brief
A passerby stabbed a dog to death Sunday after the dog attacked an elderly woman and her dog on her front lawn in Council Bluffs, an Iowa suburb of Omaha, Neb., the Omaha World-Herald reported. Kevin Daub attempted to pull the American bulldog off of 77-year-old Ann Lyon, but he was unable to do so and had to pull out his pocketknife, the World-Herald reported.