It's safe to feed dogs a variety of leafy greens including spinach, kale, swiss chard, collards, turnip greens and lettuce. Keep the portions small, especially at first — too much of a good thing can still upset your pup's tummy.
If your dog will eat leafy greens raw, try various types of lettuce, spinach, kale, and even cabbage (for kale and cabbage, see caution below about gas-inducing veggies). Swiss chard is high in vitamins A, K, and C, as well as fibre and protein.
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