Dogs can eat jacket potatoes (baked potatoes with the skin) as long as they are cooked properly and plain, without added butter, salt, pepper, or other seasonings. It is best to remove the skin before feeding because it can be tough to digest, although it is generally not harmful. Raw potatoes and green parts of potatoes contain solanine, a toxic compound, so they should never be given to dogs. Also, potatoes should only be fed in small portions occasionally since they are high in carbohydrates. Plain roasted or baked potatoes can be a healthy treat for dogs when given in moderation, providing fiber, vitamins (C, B6), and minerals beneficial for digestion and overall health. Fried or heavily seasoned potatoes are harmful and should be avoided. Dogs with diabetes should not be given potatoes due to the risk of blood sugar spikes.