DES MOINES, IA (AP).- Life-size butter sculptures of everything from cows to space heroes and Hollywood stars are among the most beloved traditions of state fairs, drawing thousands of admirers each year from Iowa to Ohio and as far south as Texas. In Iowa, where the tradition started, the fair will celebrate the 100th year of its butter cow when it begins Thursday. While other state fairs may mimic the butter cow or tout other creamy creations, none has gained as much fame as the original, Iowa State Fair President Gary Slater said. “None of the others have become that one thing that when you think of the fair, you think of it like you do here at the Iowa State Fair,” Slater said. “It’s become our icon.” Other states with butter cows include Illinois, Kansas, New York and Utah, while the Wisconsin and Indiana state fairs feature mammoth cheese carvings. But Minnesota may come the closest to Iowa in celebration of its dairy