Pregnant woman takes action when pit bull attacks

SAFETY HARBOR, Fla. -- A pregnant Florida woman fatally stabbed a pit bull in her family's care when it attacked two other dogs and then turned on her mother and sister.Pinellas County Sheriff's officials said in a news release that the attack happened Friday at the family's home in Safety Harbor, near St. Petersburg on Florida's Gulf Coast.Sheriff's spokesman Spencer Gross says Buster, the pit bull, started attacking two other pit bulls at the home. When 45-year-old Heidi Cooper tried to interv