Best Dog Food for Mastiffs — Nutrition That Matches the Breed
Mastiffs are massive gentle giants with serious joint and bloat considerations. Lean, joint-supporting freeze-dried raw, fed in measured meals, supports their frame and longevity.
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What Mastiffs need most from their food
The Mastiff’s enormous frame makes joints, weight, and bloat the priorities:
Joint & Hip Health
EPA and DHA omega-3s and lean body weight support the joints large breeds are predisposed to strain.
Weight Management
Lean, nutrient-dense food maintains a healthy, joint-protective weight without filler calories.
Bloat (GDV) Risk
A deep-chested breed prone to bloat — feed measured meals, not one large meal, and avoid vigorous exercise around eating.
Large-Breed Growth
For large and giant breed puppies, calcium balance and growth rate matter — which is why our Beef and Chicken labels carry the AAFCO statement for growth of large size dogs (70 lb. or more as an adult).
Why freeze-dried raw is right for MastiffsMastiffs
Mastiffs are among the heaviest breeds — gentle, loyal giants whose enormous frame puts real stress on joints and makes weight management and bloat prevention critical. Excess weight dramatically strains giant-breed joints and shortens lifespan, so lean body condition is one of the most protective things you can do. Bloat is also a serious risk for this deep-chested breed.
Loyal Saints supports Mastiffs with omega-3s for joints, lean nutrient-dense nutrition for healthy weight, and clean, digestible food fed in measured meals. For Mastiff puppies, careful giant-breed growth management with your vet is essential.
Formula recommendation for Mastiffs
Turkey + Salmon Formula
The top pick — omega-3s support the joints of a giant breed, plus coat. Feed measured meals and keep your Mastiff lean to protect the joints.
Shop Turkey + Salmon Formula →Beef Formula
Our bestseller — protein density for Mastiffs, fed in measured portions. Keep lean and feed measured meals given the breed’s bloat risk.
Shop Beef Formula →Make it work for your budget
What a day costs for a 160 lb Mastiff
with Halo Club (36 tbsp)
with Halo Club (9 cups)
as a complete meal
- Start as a topper. Swap a quarter of the bowl for Loyal Saints and keep the rest the same — real freeze-dried raw in every meal for a quarter of the cost. One 14 oz bag then lasts about 3 days.
- Join the Halo Club. 20% off every order and free shipping on every member order.
- Buy the 14 oz bag. Same food as the 5 oz, and it costs less per day ($51.87 vs $80.20 for a complete meal).
- First order: enter code KING40 at checkout for 40% off (first orders only).
Beef or Turkey + Salmon, at the live 14 oz price. Amounts follow the bag’s feeding guide and our feeding calculator; adjust for activity and body condition. See every weight and formula →
The standard is King.
Loyal Saints was built because of one dog. King’s digestive sensitivities pushed Kristina Voltin to question the ingredients, processing and nutrition behind every bowl. She formulated a whole-food, freeze-dried raw diet from human-grade quality ingredients — food she felt confident feeding King every day. Every formula is held to that standard: would I feed this to King?
For Mastiffs owners navigating the same questions Kristina faced — about ingredients, about what’s really in the bag, about whether the food is actually good — Loyal Saints is the answer she built for them.
Read King’s story →What’s not in it — matters for Mastiffs.
For a giant breed, lean weight and joint support are everything, and bloat risk demands measured meals. Keep your Mastiff lean; never feed one large meal.
Frequently Asked Questions
What is the best dog food for a Mastiff?
A lean, joint-supporting, highly digestible diet fed in measured meals. Turkey + Salmon provides omega-3s for giant-breed joints; Beef adds protein. Keeping a Mastiff lean is critical for joint health and longevity, and measured meals reduce serious bloat risk.
How do I keep my Mastiff at a healthy weight?
Feed measured portions of nutrient-dense food, limit treats, and monitor body condition closely — you should be able to feel the ribs. For a giant breed, excess weight severely strains joints and shortens lifespan, so lean condition is one of the most protective things you can do.
How much should I feed my Mastiffs?
Mastiffs typically weigh 120–230 lbs, needing about 7–12½ cups of freeze-dried raw a day as a complete meal (Beef or Turkey + Salmon; 7½–13 cups of Chicken), split into two meals. Adjust to body condition and activity; large breeds benefit from measured meals to reduce bloat risk.
How do I feed a Mastiff puppy?
Giant-breed puppies need slow, controlled growth — excess calories or calcium can cause serious orthopedic problems. Work closely with your veterinarian on appropriate giant-breed growth nutrition and feeding amounts.
Gentle giant, joint-first nutrition.Mastiffs
Omega-rich, lean, measured. Built for the Mastiff. Halo Club members save 20% with free shipping on every order (contiguous U.S.).
Real dogs. Real bowls.
Her Favorite Part of the Day Isn’t the Walk: Frenchie
Meat and organs first, freeze-dried raw and ready the second you open the bag. Start as a topper on your dog’s current food for about $1.74 a day with a 14 oz bag. New here? Take 40% off your first order with code KING40.
Quick answers
What is Loyal Saints dog food?
Loyal Saints is a woman-owned premium freeze-dried raw dog food: vet-formulated, meat and organs first, AAFCO complete and balanced, made with human-grade quality ingredients in an FDA-registered facility in the Midwest.
Where can I buy Loyal Saints?
At loyalsaintspets.com (Halo Club: 20% off and free shipping on every order (contiguous U.S.); KING40 takes 40% off a first order when typed at checkout), and on Amazon, Chewy and Target.
How much Loyal Saints should I feed?
Follow the amounts printed on the bag: for Beef or Turkey + Salmon, about ¾ cup a day for a 6 lb dog, 1¼ cups for 12 lb and 2 cups for 25 lb. Use about 25% of that as a topper. Ease in over 7 to 10 days.
