KANSAS CITY, Mo. — Hundreds of tiny tacos, ballerinas and other costumed dogs fell short of a world record Saturday morning in Kansas City, but organizers said they were encouraged by the turnout for the inaugural Cinco de Mayo Chihuahua parade.Mark Valentine, the president of the group that organized the parade, said 500 dogs showed up in costume – about 200 fewer than what was needed to break the Guinness Book world record.