Taste of the Wild Canyon River, All Ages, Trout and Smoked Salmon Dry Cat Food, Grain Free. A grain-free formula with sweet potatoes provides highly digestible energy for your active cat. Made with trout and wood-smoked salmon, this formula offers great taste and quality fish protein. For today's healthy cat, this formula is supplemented with fruits and vegetables, providing natural antioxidants to support a healthy immune system and overall good health. Your cat craves a taste of the wild. Go ahead and give him one.