Feed the Wire Fox Terrier one and a half to two cups of high-quality dry kibble per day, divided into two meals. Choose a food formulated for small-to-medium active breeds with a named protein as the first ingredient. The Wire Fox Terrier is a lively, energetic breed that burns calories efficiently and should be kept lean rather than carrying extra weight. Adjust portions based on actual body condition — you should be able to feel the ribs without pressing hard, but not see them. Fresh water should always be available. Avoid free-feeding to maintain a healthy weight and consistent appetite.