Supps are definitely a personal choice... I give my dogs Solid Gold supplements, but sparingly. Optional "supplement" foods that are good to feed occasionally include: fish oil, sardines, kelp, garlic (in small amounts), canned salmon, leafy greens & cabbage (pureed), pureed veggies, over-ripe fruits, eggs w/ shell, & yogurt. There are more, but those are the extras I feed most often.