A 6-year-old boy was mauled to death by a pit bull Friday evening in a Pleasant Grove neighborhood. Dallas police Sgt. Gil Cerda said that Scott Warren was inside his home when the family's 1-year-old dog attacked at about 6 p.m. The pit bull responsible for Friday's attack was taken away from the house by Dallas animal control officers. Neighbors said that Scott's family had moved in only about four months ago, but that their dogs had already become a nuisance. One neighbor, Rudy Lopez, said he saw a woman beating one of the dogs a few weeks ago with...