Best dry dog food for adult dogs

Top pick: IAMS Adult Minichunks — a complete adult kibble with chicken as the first ingredient, a joint-health claim, and a huge base of owner ratings. It's the safest everyday choice for most adult dogs, and the small chunks suit dogs of any size.

Who the others suit:

• Purina ONE + Plus — a step up in protein for active dogs, still widely available.
• Blue Buffalo Life Protection — good if you want a natural-leaning formula with skin and coat support.
• Royal Canin Small Breed Adult — for small dogs that need a smaller kibble.
• Merrick Healthy Grains Large Breed — for big dogs, with grain included.
• Instinct Original Grain-Free (rabbit) — for dogs that do better on grain-free.
• Pedigree / Purina Dog Chow — budget bags for multi-dog homes.

Whatever you choose, switch over 7–10 days and pick a formula matched to your dog's size and activity.