Grain Free Small Breed Dog Food - Duck with Sweet Potato & OrangeKibble UK Grain Free Dog Food Why Duck? Duck is a lean, nutrient dense source of protein and also provides nutrients such as iron, selenium, B vitamins and zinc which contribute towards general health and wellbeing. Why Orange? Orange is well known for being rich in vitamin C, an anti oxidant which can help support the immune system. Minimum 26% Freshly Prepared Duck: Responsibly sourced and highly digestible protein. 52% Total Duck: Rich in amino