Footwear retailer Shoe Carnival Inc on Thursday reported a 0.9 per cent dip in August same-store sales and said it sees third-quarter earnings at the low end of its forecast. The operator of nearly 200 stores said weak back-to-school results mean it expects earnings per share of 40 cents and added total sales for the month rose eight per cent to $59.9 million from $55.4m in the year-ago period.