This formula is perfect for toy and small breed ADULT dogs! It provides a targeted energy intake to boost vitality and helps keep extra weight off. We also chose chicken because it is highly digestible. In addition, since small breed dogs are prone to constipation, prebiotic fiber has been added to optimize bowel movement and promote healthy stools. The formula also contains a unique combination of antioxidants to boost the immune system and protect the organs, skin and coat. Moreover, fussy little dogs find this new formula irresistibly tasty!