A 5-year-old boy whose family home was destroyed by the Oklahoma tornado survivied the natural disaster but fell prey to the attack of a dog that killed him on Sunday at a house where he is staying. The child and his 2-year-old sister were sent to live with family friends in Little Rock, Ark., according to Sky News. Their parents remained in Moore to rebuild their home, ruined in late May when the tornado tore through the Oklahoma City suburb. A bullmastiff living in the home with them attacked the boy and killed him, police told KARK-TV.