Can Dogs Eat Bananas? Bananas are a safe and healthy treat for your dog. They’re high in potassium, vitamins, biotin, fiber, and copper. They are low in cholesterol and sodium, but because of their high sugar content, bananas should be given as a treat, not part of your dog’s main diet. Bananas are loaded with vitamins and minerals. Fiber is essential to keep your pet’s bowel movements regular and help regulate the motility of your dog’s gut.