Yes — cooked and plain.
Cooked sweet potato (no butter, marshmallows, or seasoning) is a nutritious, fiber-rich treat. Serve it mashed or in small cubes. Raw sweet potato is hard to digest, so always cook it.
Enjoy — this is a safe treat in sensible portions. Introduce any new food gradually and watch for individual sensitivities, just like with people.
Get the printable list of the 30 most dangerous foods for dogs.