A six-year-old girl watched in horror as police gunned down her one-year-old dog as it stood in their front yard, her family has said. The girl's mother, Nicole Echlin, said their shepherd-mix Apollo, whom they have had since he was a puppy, got out of their yard in Hometown near Chicago, Illinois on Friday afternoon. After they chased him around the neighborhood, he returned to the yard and was standing on the lawn when police arrived and pulled out their guns, Echlin told the Chicago Tribune. 'He started showing his teeth - that's when the officer shot him,' Echlin, 27,...