Dehydrated sweet potato on a rope. On a rope means playtime and a great way to introduce sweet-potato-chips. Hide it, throw it or just for playing tug of war. Why Sweet Potatoes Are Good for Dogs. Sweet potatoes provide an excellent source of dietary fiber, which helps the digestive system function more effectively. They are an excellent source of vitamins A and C, fiber and various essential minerals. Incorporating dehydrated sweet potatoes into their diet is an easy way to boost pup's nutrient intake. A nutritious and safer alternative to rawhide! And a really good way to maintain healthy gums and clean teeth. Feed in moderation.