Quick answer

Our top pick is Purina Pro Plan Large Breed Adult Shredded Blend Chicken & Rice. It combines large breed kibble with probiotics and fiber to aid digestion and reduce breath odor. For a budget option, Diamond Naturals Large Breed Adult offers similar benefits. If your dog has a sensitive stomach, Hill’s Science Diet Large Breed Sensitive Stomach is ideal.

What to consider for Large Breed Dog Food For Dogs With Bad Breath

Bad breath in large breed dogs often stems from dental plaque, gum disease, or digestive issues. Large breeds are prone to periodontal disease due to their mouth size and chewing habits. A food with larger kibble texture can help scrape teeth, while probiotics and fiber improve gut health. Avoid foods with high sulfur content from low-quality proteins or excessive fillers, which can worsen breath.

What to look for in a dog food

Choose a food that is AAFCO complete and balanced for your dog’s life stage (adult or large breed puppy). Look for a named meat as the first ingredient (e.g., chicken, lamb, salmon). Protein should be around 20 to 30 percent, fat 10 to 18 percent, and calories 300 to 400 per cup for large breeds. Ensure the kibble size is appropriate for large jaws. Joint support (glucosamine, chondroitin) and omega fatty acids (for skin and coat) are beneficial. Avoid foods with excessive carbohydrates or artificial additives.

How we chose these picks

  • Evaluated ingredient lists for named protein sources and absence of unnamed meat meals.
  • Checked that each formula is AAFCO complete and balanced for the intended life stage.
  • Selected products with large breed-specific kibble size and nutrient profiles.
  • Prioritized formulas with added probiotics or prebiotic fiber for digestive health.
  • Considered customer feedback on breath improvement and overall palatability.
  • Ensured products are from reputable brands with established quality control.
  • Compared price per pound to offer options at different budgets.
  • Never ranked a product higher just because it pays a commission.

What to avoid

  • Avoid foods with unnamed “meat meal” as the only protein source; opt for named meals like chicken meal.
  • Do not default to grain-free or legume-heavy recipes; the FDA DCM investigation is ongoing, and grain-inclusive is safer unless a vet advises otherwise.
  • Avoid all-life-stages food for a large breed puppy; they need large breed puppy specific formulas to control growth rate.
  • Avoid abrupt diet switches; transition over 7 to 10 days to prevent digestive upset.

For more guidance, visit our dog guides, dog food, and dog health sections.

Sources and further reading