P-Tater Tots Treats – Sweet potatoes a sweet flavor dogs love, and great for digestive health because they’re high in dietary fiber, also low in fat and contain vitamin B6, vitamin C, and manganese. Sweet potatoes are rich in the powerful antioxidant beta-carotene. Beta-carotene converts to vitamin A in your dog’s body, which is essential for your dog’s vision, growth, and muscle strength. Symptoms of Vitamin A deficiency include night blindness and poor hair and skin quality.