Best Dog Foods for Mastiffs: Big Eats for Big Dogs! 

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Best Dog Food for Mastiff

Hello, mastiff moms and dads! Today, we’re delving into the optimal foods for mastiffs! As committed canine caretakers, we understand the importance of providing our large pets with the right nourishment to keep them healthy and happy . 

Below, we’ll share some of the best mastiff foods around, including fresh, dry, wet, and dehydrated options. We’ll also share some of the best foods for mastiffs with specific health issues. 

We will also explain some of the common health issues mastiffs have, as they may influence your choice of food. We’ll also share some general dog-food selection tips and mastiff feeding recommendations. 

Let’s jump right in!

Best Overall Dog Food for Mastiffs
Best Dry Dog Food for Mastiffs
Best Wet Dog Food for Mastiffs
Best Overall Dog Food for Mastiffs
Best Dry Dog Food for Mastiffs
Best Wet Dog Food for Mastiffs

Health Considerations for Mastiffs 

mastiff health problems

Alright, let’s talk about some common food-related health problems that can crop up in our beloved Mastiffs. These big-hearted pups may be tough on the outside, but they can be sensitive on the inside when it comes to their tummies. 

Here are some food-related issues to watch out for:

  • Food Allergies: Mastiffs often suffer from food allergies. Typically, itchy skin is the most common symptom food allergies cause, so keep an eye on any coat or skin changes after trying out new foods, and consult your vet if you suspect an allergy. Often, dogs with food allergies can benefit from a limited ingredient diet (LID). 
  • Obesity: These gentle giants love their food, but too much of a good thing can lead to obesity. Extra weight can put strain on their joints and lead to other health problems. Be mindful of portion sizes and resist those pleading eyes when they’re begging for more treats!
  • Pancreatitis: Mastiffs can be at risk for pancreatitis, which is inflammation of the pancreas. Fatty foods and sudden dietary changes are known culprits. Stick to a consistent diet and avoid feeding your furry friend table scraps that are high in fat.
  • Gastritis: Mastiffs sometimes experience gastritis, which is inflammation of the stomach lining. Accordingly, it’s often wise to select very gentle foods to keep their tummies happy.
  • Joint Issues: Like many other large breeds, mastiffs can suffer from hip and elbow dysplasia, as well as arthritis. So, in addition to keeping your mastiff fit and trim, consider looking for a food with glucosamine, chondroitin, and omega-3-rich fish oils. 

Remember, our Mastiffs rely on us to make the right food choices for them. If you notice any concerning signs or have questions about your pet’s diet, don’t hesitate to reach out to your vet. Keeping an eye on what goes into your mastiff’s food bowl can go a long way in ensuring he lives a healthy and happy life!

Pet-Care Pro Tip: Watch Out for Bloat

Mastiffs are prone to bloat, also known as gastric dilatation-volvulus (GDV).

It’s a serious condition where the stomach fills with gas and twists, causing pain and potentially cutting off blood flow. It can even prove fatal, so it is definitely something you want to avoid.

Feeding smaller, more frequent meals and avoiding exercise right after eating can help prevent this scary situation.

The 11 Best Dog Foods for Mastiffs: Bow Wow! 

dog food options

Now that you know some of the things to look for when picking a food for your mastiff, we can share some of the best options for different situations. Check ‘em out! 

1. Nom Nom [Best Overall Dog Food for Mastiffs]

Best Overall Dog Food for Mastiffs
Nom Nom

Premium, custom-formulated fresh dog food that's made from top-notch, US-sourced ingredients.

Special Discount: New customers can get 50% off!
Buy Now (Get 50% Off) Read Our Review


Because it is made with such high-quality ingredients, we consider this one of the best overall foods for ANY four-footer, including mastiffs.

About: Nom Nom is a fantastic fresh dog food brand worth considering for mastiff owners seeking a US-made food. Each Nom Nom recipe is thoughtfully crafted by a canine nutritionist to suit your specific pet’s needs and features human-grade ingredients.  

First Five Ingredients: Ground Turkey, Brown Rice, Eggs, Carrots, & Spinach


  • Expert Nutrition: Nom Nom recipes are carefully crafted by a board-certified veterinary nutritionist, ensuring your pup’s health is in good hands.
  • USA-Sourced Ingredients: With a commitment to quality, Nom Nom uses only ingredients from the USA, giving you peace of mind about your pup’s food.
  • Retained Flavor: Their gentle cooking process ensures that the meals are super delicious, for a taste your doggo will love.
  • Protein Priority: Each recipe starts with whole proteins, providing your dog with a wholesome nutritional foundation.
  • Personalized Meals: Nom Nom takes your dog’s unique needs into account, crafting meals to address allergies and specific health considerations.

Ingredients List

Ground turkey, brown rice, eggs, carrots, spinach...,

dicalcium phosphate, calcium carbonate, salt, potassium chloride, fish oil, natural flavor, vinegar, citric acid, taurine, choline bitartrate, zinc gluconate, ferrous sulfate, vitamin E supplement, copper gluconate, niacin (vitamin B3), manganese gluconate, vitamin A supplement, thiamine mononitrate (vitamin B1), pyridoxine hydrochloride (vitamin B6), selenium yeast, riboflavin (vitamin B2), vitamin B12 supplement, cholecalciferol (source of vitamin D3), potassium iodide.


  • Each recipe is nutritious and packed with protein
  • Most dogs go nuts for the taste of Nom Nom
  • Nom Nom can be purchased in half portions and used as a tasty topper  
  • Owners loved the convenience of the automatic subscription service 
  • Nom Nom offers a sample pack option for owners who don’t want to commit to a subscription


  • Portioning the frozen-food packs can be a bit tricky at times 
  • Like many other fresh options, Nom Nom falls on the pricier side

2. Blue Buffalo Large Breed [Best Dry Dog Food for Mastiffs]

Best Dry Dog Food for Mastiffs
Blue Buffalo Life Protection Formula Large Breed Adult

A balanced medley of proteins, grains, and produce for nose-to-tail health of large doggos.

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This is a great option for mastiff parents seeking the ideal combination of quality, affordability, and convenience.

About: Blue Buffalo’s Life Protection Large Breed recipe is a meticulously formulated dry food tailored to meet the nutritional needs of dogs weighing more than 70 pounds. In addition to featuring nutritious proteins, this grain-inclusive recipe features a thoughtful blend of brown rice, oatmeal, and barley, providing a steady source of energy and satiety between meals. 

First Five Ingredients: Deboned Chicken, Chicken Meal, Brown Rice, Oatmeal, & Barley


  • Antioxidant Boost: Blue Buffalo’s trademark LifeSource Bits come loaded with antioxidants, ensuring superior health support for your furry friend.
  • Irresistible Options: Choose from delectable chicken and lamb-based recipes, perfectly tailored to please your pup’s discerning palate.
  • Happy Tummies: Thanks to a thoughtful blend of prebiotics and probiotics, this food offers gentle assistance to your dog’s digestive system, promoting overall well-being.
  • Quality Assurance: Proudly made in the USA with globally sourced ingredients, Blue Buffalo ensures top-notch quality and safety standards for your pup’s peace of mind.

Ingredients List

Deboned Chicken, Chicken Meal, Brown Rice, Oatmeal, Barley...,

Pea Starch, Peas, Flaxseed (source of Omega 3 and 6 Fatty Acids), Pea Fiber, Natural Flavor, Chicken Fat (preserved with Mixed Tocopherols), Pea Protein, Fish Oil (source of EPA-Eicosapentaenoic Acid), Direct Dehydrated Alfalfa Pellets, Potassium Chloride, Dicalcium Phosphate, Calcium Carbonate, Salt, Dried Chicory Root, Potatoes, Alfalfa Nutrient Concentrate, Choline Chloride, Taurine, DL-Methionine, preserved with Mixed Tocopherols, Vitamin E Supplement, Sweet Potatoes, Carrots, Glucosamine Hydrochloride, Garlic, L-Carnitine, Zinc Amino Acid Chelate, Zinc Sulfate, Vegetable Juice for color, Ferrous Sulfate, Iron Amino Acid Chelate, Blueberries, Cranberries, Barley Grass, Parsley, Turmeric, Dried Kelp, Yucca Schidigera Extract, Niacin (Vitamin B3), Calcium Pantothenate (Vitamin B5), L-Ascorbyl-2-Polyphosphate (source of Vitamin C), L-Lysine, Copper Sulfate, Biotin (Vitamin B7), Vitamin A Supplement, Copper Amino Acid Chelate, Manganese Sulfate, Chondroitin Sulfate, Manganese Amino Acid Chelate, Thiamine Mononitrate (Vitamin B1), Riboflavin (Vitamin B2), Vitamin D3 Supplement, Vitamin B12 Supplement, Pyridoxine Hydrochloride (Vitamin B6), Calcium Iodate, Dried Yeast, Dried Enterococcus faecium fermentation product, Dried Lactobacillus acidophilus fermentation product, Dried Aspergillus niger fermentation extract, Dried Trichoderma longibrachiatum fermentation extract, Dried Bacillus subtilis fermentation extract, Folic Acid (Vitamin B9), Sodium Selenite, Oil of Rosemary


  • Carefully balanced vitamins and minerals to meet the needs of large-breed dogs
  • Contains great extras, including probiotics, prebiotics, and antioxidants
  • Provides glucosamine and chondroitin for joint support 


  • Limited protein options available
  • Some dogs pick around the LifeSource Bits

3. Canidae Chicken & Rice [Best Wet/Canned Dog Food for Mastiffs]

Best Wet/Canned Dog Food for Mastiffs
Canidae All Life Stages

High-quality protein and hearty grains combine in a pup-pleasing pate-style food.

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This is a great food for picky mastiffs, poor drinkers, and those with dental problems.

About: CANIDAE’s Chicken & Rice recipe is an excellent choice for mastiffs who prefer wet meals. Thoughtfully formulated with essential omega-3s and antioxidants, this food will help provide the nutrition your dog needs while satisfying his palate with every mouthful. Notably, this is a grain-inclusive formula – a rare find in the canned-food category and helpful for owners worried about DCM.

First Five Ingredients: Chicken, Chicken Broth, Chicken Liver, Dried Egg Product, & Brown Rice


  • Easy to Eat: The soft texture of wet food is easy for older dogs or those with bad or missing teeth to eat. 
  • Healthy Coat Support: Packed with omega-3-rich ingredients, our food promotes a healthy and lustrous coat, keeping your furry friend looking and feeling his best.
  • Expert Formulation: This recipe is meticulously crafted by veterinarians, ensuring it meets the highest standards of nutrition for your beloved canine companion.
  • Grain-Inclusive Goodness: Because it is made with healthy grains, this food may help prevent DCM.
  • Suitable for All Life Stages: This food is formulated for dogs of all ages, from playful pups to wise seniors.

Ingredients List

Chicken, Chicken Broth, Chicken Liver, Dried Egg Product, Brown Rice...,

Pearled Barley, Potassium Chloride, Salt, Salmon Oil (Preserved with Mixed Tocopherols), Sunflower Oil, Sodium Tripolyphosphate, Agar-agar, Choline Chloride, Canola Oil, Dried Kelp, Dried Cranberries, Yucca Schidigera Extract, Vitamin E Supplement, Zinc Sulfate, Niacin Supplement, Ferrous Sulfate, Thiamine Mononitrate, Zinc Proteinate, Manganese Sulfate, Vitamin A Supplement, L-Ascorbyl-2-Polyphosphate, Iron Proteinate, d-Calcium Pantothenate, Copper Sulfate, Pyridoxine Hydrochloride, Manganese Proteinate, Potassium Iodide, Riboflavin Supplement, Copper Proteinate, Folic Acid, Vitamin D3 Supplement, Cobalt Proteinate, Sodium Selenite, Biotin, Vitamin B12 Supplement, Rosemary Extract. 


  • The majority of dogs love the taste
  • Wet foods provide bonus hydration
  • It can be served alone or as a topping for kibble
  • Most dogs digest it without issue


  • Some dogs may not prefer the thicker consistency of this canned food
  • Compared to kibbles, canned foods are usually less convenient to serve

4. Diamond Naturals Chicken & Rice Large Breed [Best Budget-Friendly Dog Food for Mastiffs]

Best Budget-Friendly Dog Food for Mastiffs
Diamond Naturals Dry Dog Food
A kibble formulated to meet the nutrient needs of large breed doggos that won't break the bank.
Buy on Amazon Buy on Chewy


This is a fantastic food for cost-conscious mastiff pawrents.

About: For pet parents on a budget, it’s important to find a top-quality dog food that doesn’t break the bank. Diamond Naturals offers just that – a budget-friendly yet nutritious option that rivals some of the pricier brands. This dry food features high-quality proteins, wholesome carbs and vegetables, and it’s fortified with joint-boosting supplements. Simply put, it delivers excellent nutrition at a price that’s easy on your wallet.

First Five Ingredients: Chicken, Chicken Meal, Whole Grain Brown Rice, Cracked Pearled Barley, & Ground White Rice


  • Real Chicken Content: This recipe uses whole chicken and chicken meal to provide a substantial protein source vital for your Mastiff’s muscle health.
  • Omega-3 and Antioxidant Rich: Packed with omega-3 fatty acids and antioxidants, this food supports a healthy coat and robust immune system.
  • Family-Owned USA Brand: Diamond Naturals is a family-owned brand proudly producing its products in the USA, ensuring quality and safety for your pet.
  • Skin and Coat Support: The inclusion of omega-3s in this dry dog food recipe promotes healthy skin and a glossy coat.
  • No Undesirable Fillers: This recipe does not contain any corn, wheat, or artificial flavors, making it a wholesome and natural food choice for your Mastiff.
  • Probiotic Infused: The addition of probiotics supports your dog’s digestion, contributing to overall well-being.

Ingredients List

Beef esophagus...,

That’s it!


  • This dog food is affordable yet packed with nutrients
  • Contains joint-supporting supplements for your mastiff’s health
  • Includes probiotics and fiber-rich ingredients for smooth digestion


  • This dog food often runs out of stock, probably due to its popularity 
  • Some dogs might find this dry dog food less appetizing than pricier options

5. The Honest Kitchen [Best Dehydrated Dog Food for Mastiffs] 

Best Dehydrated Dog Food for Mastiffs
The Honest Kitchen Whole Grain Dehydrated Dog Food

A dehydrated dog food made with ranch-raised beef, organic whole oats, and simple garden produce -- just add water and serve!

Use code K930 to get 30% off your order!

Buy at The Honest Kitchen Our Review


Owners who like to prepare their pet’s food to order (and appreciate human-grade ingredients) will love this food.

About: The Honest Kitchen is a brand dedicated to producing high-quality dog food that’ll drive your doggo’s taste buds wild. It’s also made in small, controlled batches via innovative dehydration techniques, resulting in a food that you and your mastiff will love. 

First Five Ingredients: Dehydrated Beef, Dehydrated Sweet Potatoes, Dehydrated Potatoes, Organic Flaxseed, & Dried Organic Coconut


  • Human-Grade Facility: The Honest Kitchen prides itself on being the first company to produce “human-grade” dog foods since 2002, and all of their foods are made in the USA in “human-grade” facilities.
  • Organic Ingredients: This brand places great importance on organic ingredients, which appeals to many pup parents.
  • Choice of Recipes: Choose from three different recipes to best cater to your mastiff’s taste buds.
  • No Refrigeration Required: Although leftovers need to be refrigerated, the packaged product requires no refrigeration.
  • Nothing Unnecessary: With no by-products, artificial colors, or preservatives, this food provides everything your dog needs and nothing he doesn’t.  

Ingredients List

Dehydrated Beef, Dehydrated Sweet Potatoes, Dehydrated Potatoes, Organic Flaxseed, Dried Organic Coconut...,

Dried Parsley, Dried Papayas, Dried Cranberries, Dehydrated Pumpkin, Dehydrated Honey, Dehydrated Kale, Minerals [Tricalcium Phosphate, Sodium Chloride, Potassium Chloride, Choline Chloride, Zinc Amino Acid Chelate, Iron Amino Acid Chelate, Potassium Iodide, Copper Amino Acid Chelate, Sodium Selenite], Taurine, Vitamins [Vitamin E Supplement, Vitamin B12 Supplement, Thiamine Mononitrate (Vitamin B1), D- Calcium Pantothenate (Vitamin B5), Riboflavin (Vitamin B2), Vitamin D3 Supplement], EPA, DHA.


  • The dehydrated format allows for easy storage and travel
  • The high-quality ingredients provide a nutrient-rich meal
  • The variety of recipes caters to different dietary needs and preferences


  • The dehydrated format requires rehydration before serving, which may be less convenient for some owners
  • It’s more expensive than traditional kibble

6. Nutro Chicken & Brown Rice Puppy Large Breed [Best Dog Food for Mastiff Puppies]

Best Dog Food for Mastiff Puppies
Nutro Large Breed Puppy

A nutrient-rich puppy food made with lean protein, antioxidants, and joint-supporting supplements. 

  • Designed for large-breed dogs
  • Made with nutritious grains
  • Loaded with fiber
  • Chicken alternatives would be nice
  • Doesn’t contain any probiotics


This is the best food around for small-but-mighty mastiff puppies.

About: Nutro Wholesome Essentials is a specially formulated diet for large breed puppies like Mastiffs. In addition to being made with nutritious proteins, grains, and produce, it is enriched with glucosamine and chondroitin, important supplements for supporting healthy joints and bones.

First Five Ingredients: Chicken, Chicken Meal, Whole Brown Rice, Brewers Rice, & Lentils


  • High-Quality Protein: This formula uses farm-raised chicken as the primary ingredient, ensuring an excellent protein source for your growing puppy.
  • Omega-Rich: The inclusion of Omega fatty acids aids in brain development and promotes a healthy and shiny coat.
  • No Unnecessary Ingredients: You won’t find any corn, soy, wheat, or meat by-products in this recipe – it’s only full of stuff your dog needs (and wants!).
  • Made in the USA: Nutro Wholesome Essentials is cooked and packaged in the USA, ensuring stringent quality and safety standards for your peace of mind.

Ingredients List

Chicken, Chicken Meal, Whole Brown Rice, Brewers Rice, Lentils...,

Whole Grain Sorghum, Lamb Meal, Pea Protein, Chicken Fat, Sweet Potato, Dried Plain Beet Pulp, Natural Flavor, Fish Oil , Potassium Chloride, Salt, Choline Chloride, DL-Methionine, Mixed Tocopherols and Citric Acid, Pea Fiber, Zinc Sulfate, Niacin Supplement, Calcium Carbonate, Biotin, Vitamin E Supplement, Iron Amino Acid Chelate, D-Calcium Pantothenate, Selenium Yeast, Riboflavin Supplement, Copper Amino Acid Chelate, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Manganese Amino Acid Chelate, Vitamin A Supplement, Thiamine Mononitrate, Potassium Iodide, Vitamin D3 Supplement, Folic Acid, Rosemary Extract.


  • Delicious formula that most puppies seem to enjoy
  • Specially designed to cater to the unique nutritional needs of large-breed puppies
  • Contains omega-3-rich ingredients to support proper development and combat inflammation


  • The inclusion of vegetable juice for color is not harmful, but it is unnecessary
  • We’d prefer they were more transparent about the “natural flavors” used
  • The absence of probiotics makes this option slightly less appealing than some others

7. Merrick Healthy Grains Senior [Best Dog Food for Senior Mastiffs]

Best Dog Food for Senior Mastiffs
Merrick Healthy Grains Senior Recipe

A grain-inclusive senior kibble that’s loaded with joint-supporting glucosamine and chondroitin.

Buy on Chewy Buy on Amazon


Thanks to its included joint supplements and omega-3s, this is the perfect pick for aging mastiffs.

About: Merrick Healthy Grains Senior recipe is designed to support your aging mastiff with premium proteins and healthy grains. It also contains a hefty helping of glucosamine and chondroitin in each serving to promote joint health, as well as a substantial amount of omega-3 fatty acids to help maintain your elder mastiff’s coat and skin.

First Five Ingredients: Deboned Chicken, Chicken Meal, Brown Rice, Oatmeal, & Barley


  • High-Quality Protein: Real, deboned chicken is the first ingredient, providing a quality source of protein for your senior mastiff.
  • Joint Support: Packed with 800 mg/kg of glucosamine and chondroitin, this food is designed to support joint health and mobility in older dogs.
  • Energy-Boosting Carbs: Contains healthy grains and vegetables for a steady source of fiber and energy, vital for keeping your senior pup active.
  • Made in the USA: Merrick Healthy Grains Senior Recipe is cooked and packaged in the USA. 

Ingredients List

Deboned chicken, Chicken meal, Brown rice, Oatmeal, Barley...,

Turkey meal, Chicken fat, Quinoa, Natural flavor, Flaxseed, Salmon oil, Potassium chloride, Salt, Apples, Carrots, Sunflower oil, Organic dehydrated alfalfa meal, Choline chloride, Iron amino acid complex, Zinc amino acid complex, Zinc sulfate, Sodium selenite, Manganese amino acid complex, Copper amino acid complex, Potassium iodide, Cobalt proteinate, Cobalt carbonate, Taurine, Yucca schidigera extract, Mixed tocopherols, Vitamin E supplement, Vitamin B12 supplement, Riboflavin supplement, Vitamin A acetate, d-Calcium pantothenate, Thiamine mononitrate, Folic acid, Niacin, Biotin, Pyridoxine hydrochloride, Vitamin D3 supplement, Citric acid, Dried Lactobacillus plantarum fermentation product, Dried Lactobacillus casei fermentation product, Dried Enterococcus faecium fermentation product, Dried Lactobacillus acidophilus fermentation product


  • Contains more glucosamine and chondroitin than many other senior dog foods
  • Includes probiotics for digestive health
  • Most dogs appear to enjoy the flavor


  • There aren’t any other protein options available
  • It is more expensive than many other dry dog foods
  • Some owners may view alfalfa meal as a “filler” ingredient

8. Blue Buffalo Veterinary Diet W+M [Best Dog Food for Mastiffs with Joint Issues]

Best Dog Food for Mastiffs with Joint Issues
Blue Buffalo Weight Management + Mobility Support

A veterinarian-designed prescription diet that's formulated with joint supplements and a ton of Omega-3s.

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This is a fantastic food for mastiffs who struggle to get around (as well as those who need to shed a few pounds).

About: If your mastiff struggles with joint issues, it might be worthwhile to consider Blue Buffalo’s W+M recipe. This specially formulated diet requires a veterinary prescription, but it’s a small price to pay for the immense benefits it delivers. Packed with salmon and chicken, this recipe is not only delicious but also fortified with high amounts of omega-3 fatty acids, glucosamine, and chondroitin for joint support.

Additionally, this weight management formula can also help your canine companion maintain a healthy weight, which is beneficial in reducing joint stress.

First Five Ingredients: Deboned Salmon, Chicken Meal, Pea Protein, Powdered Cellulose, & Peas


  • Joint and Weight Support: This food is specially crafted to support joint health and help maintain a healthy weight in your pup. 
  • Enhanced with Supplement: Fortified with omega-3s, vitamins, minerals, and joint supplements, this diet provides comprehensive nutritional support. 
  • High-Quality Protein: Whole fish is the first ingredient, providing a rich source of protein for your mastiff.
  • Made in the USA: Blue Buffalo is proud to cook and package their products in the USA, ensuring high quality and safety standards.
  • Promotes Digestive Health: With a recipe rich in fiber, this food promotes proper digestive function in your dog.

Ingredients List

Deboned Salmon, Chicken Meal, Pea Protein, Powdered Cellulose, Peas...,

Tapioca Starch, Natural Flavor, Pea Starch, Flaxseed (source of Omega 3 Fatty Acids), Fish Oil (source of EPA-Eicosapentaenoic Acid), Gelatin, Cranberries, Dried Tomato Pomace, Canola Oil (source of Omega 6 Fatty Acids), Shrimp Meal (source of Glucosamine), Potassium Sulfate, Pea Fiber, Choline Chloride, Potassium Chloride, Betaine Hydrochloride, Calcium Chloride, DL-Methionine, Dehydrated Alfalfa Meal, Chicken Fat (preserved with Mixed Tocopherols), Dried Chicory Root (source of Soluble Fiber), Taurine, Calcium Sulfate, Potatoes, Turmeric, Pomegranate, Alfalfa Nutrient Concentrate, L-Threonine, Dicalcium Phosphate, Calcium Carbonate, L-Tryptophan, Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Sweet Potatoes, Carrots, L-Carnitine, Zinc Amino Acid Chelate, preserved with Mixed Tocopherols, Iron Amino Acid Chelate, Chondroitin Sulfate, Garlic, Vegetable Juice for color, Salt, Blueberries, Barley Grass, Parsley, Dried Kelp, Yucca Schidigera Extract, Copper Amino Acid Chelate, Manganese Amino Acid Chelate, Niacin (Vitamin B3), Calcium Pantothenate (Vitamin B5), L-Lysine, Biotin (Vitamin B7), Vitamin A Supplement, Zinc Sulfate, Ferrous Sulfate, Thiamine Mononitrate (Vitamin B1), Riboflavin (Vitamin B2), Vitamin D3 Supplement, Vitamin B12 Supplement, Pyridoxine Hydrochloride (Vitamin B6), Calcium Iodate, Dried Yeast, Dried Enterococcus faecium fermentation product, Dried Lactobacillus acidophilus fermentation product, Dried Aspergillus niger fermentation extract, Dried Trichoderma longibrachiatum fermentation extract, Dried Bacillus subtilis fermentation extract, Copper Sulfate, Folic Acid (Vitamin B9), Manganese Sulfate, Sodium Selenite, Oil of Rosemary.


  • Many owners have noticed enhanced mobility and weight reduction after making a switch
  • The majority of dogs seem to relish the flavor of this food, which is often not the case with prescription diets
  • Some owners reported their dogs appeared more lively after switching to this food


  • This food is relatively expensive, much like most prescription diets
  • This diet is grain-free, which may cause hesitation among some owners

9. Wellness Complete Health Healthy Weight [Best Dog Food for Overweight Mastiffs]

Best Dog Food for Overweight Mastiffs
Wellness Complete Health Healthy Weight

Grain-inclusive dry food made with fiber-rich vegetables and lean, whole chicken. 

Buy on Amazon Buy on Chewy


Thanks to its fiber content and relatively low calorie count, this is a great option for mastiffs who struggle with their weight.

About: Wellness Complete Health Healthy Weight is an great choice for mastiffs needing to shed a few pounds. This calorie-conscious recipe features high-quality proteins, fatty acids for healthy skin and coat, and a bounty of fruits and vegetables like spinach, carrots, and blueberries. Like all Wellness Complete products, this chicken-based dog food contains no artificial additives, poultry by-products, or fillers.

First Five Ingredients: Deboned Chicken, Chicken Meal, Oatmeal, Ground Brown Rice, & Ground Barley


  • High-Quality Proteins: Packed with premium proteins, including deboned chicken, chicken meal, and whitefish, this food helps to maintain your mastiff’s muscle health while managing weight.
  • Whole Grains: This recipe includes whole grains that keep your pup feeling full longer, providing sustained energy throughout the day.
  • Digestive Support: With the inclusion of four different probiotics, this food helps promote proper intestinal function.
  • Made in the USA: Wellness Complete Health Healthy Weight is proudly cooked and packaged in the USA, ensuring the highest quality and safety standards.

Ingredients List

Deboned Chicken, Chicken Meal, Oatmeal, Ground Brown Rice, Ground Barley,...,

Peas, Tomato Pomace, Rice, Ground Flaxseed, Tomatoes, Chicken Fat, Carrots, Natural Chicken Flavor, Potassium Chloride, Choline Chloride, Spinach, Vitamin E Supplement, Taurine, Zinc Proteinate, Mixed Tocopherols Added to Preserve Freshness, Sweet Potatoes, Apples, Blueberries, Zinc Sulfate, Calcium Carbonate, Niacin, Ferrous Sulfate, Iron Proteinate, Vitamin A Supplement, Glucosamine Hydrochloride, Chondroitin Sulfate, Ascorbic Acid (Vitamin C), Copper Sulfate, Thiamine Mononitrate, Copper Proteinate, Chicory Root Extract, Manganese Proteinate, Manganese Sulfate, D-Calcium Pantothenate, Sodium Selenite, Pyridoxine Hydrochloride, Riboflavin, Yucca Schidigera Extract, Garlic Powder, Vitamin D3 Supplement, Biotin, Calcium Iodate, Vitamin B12 Supplement, Folic Acid, Dried Lactobacillus Plantarum Fermentation Product, Dried Enterococcus Faecium Fermentation Product, Dried Lactobacillus Casei Fermentation Product, Dried Lactobacillus Acidophilus Fermentation Product Rosemary Extract, Green Tea Extract, Spearmint Extract.


  • Most owners have noticed a significant reduction in their dog’s weight and an increase in activity levels
  • The quality of the ingredients used is exceptional 
  • Most dogs love the taste of this food


  • An ideal weight-loss food would have fewer calories per serving 
  • Some owners have reported that the food made their dog gassy

10. Taste of the Wild High Prairie [Best Grain-Free Dog Food for Mastiffs]

Best Grain-Free Dog Food for Mastiffs
Taste of the Wild High Prairie

A combination of high-quality meats make this kibble a grain-free, protein-rich powerhouse.

Buy on Chewy Buy on Amazon


An ideal option for mastiffs with bona fide, vet-diagnosed grain allergies or intolerances.

About: Grain-free foods aren’t right for all doggos, but those who do need a grain-free option will likely love Taste of the Wild High Prairie. Made with a variety of proteins, this recipe brings an adventure of flavors by including water buffalo, lamb, roasted bison, and venison. This protein-packed dry dog food is also fortified with probiotics to help promote good digestive health.

First Five Ingredients: Water Buffalo, Lamb Meal, Chicken Meal, Sweet Potatoes, & Peas


  • Exotic Proteins: This recipe uses a blend of unique protein sources like water buffalo, lamb, roasted bison, and venison, providing a flavor-packed meal your dog will love. 
  • Nutrient Rich: Contains superfoods such as blueberries and raspberries, providing essential antioxidants for your pet’s overall health.
  • Digestive Support: This food is fortified with probiotics to promote a healthy gut and aid digestion.
  • Suitable for All: This recipe is not only suitable for dogs of all life stages, but also large-breed dogs, such as mastiffs. 
  • Omega-3-Rich: The addition of ocean fish meal provides omega-3 fatty acids, essential for a healthy coat and skin.

Ingredients List

Water Buffalo, Lamb Meal, Chicken Meal, Sweet Potatoes, Peas...,

Potatoes, Chicken Fat (Preserved With Mixed Tocopherols), Egg Product, Roasted Bison, Roasted Venison, Beef, Natural Flavor, Tomato Pomace, Potato Protein, Pea Protein, Ocean Fish Meal, Salt, Choline Chloride, Taurine, Dried Chicory Root, Tomatoes, Blueberries, Raspberries, Yucca Schidigera Extract, Dried Lactobacillus Plantarum Fermentation Product, Dried Bacillus Subtilis Fermentation Product, Dried Lactobacillus Acidophilus Fermentation Product, Dried Enterococcus Faecium Fermentation Product, Dried Bifidobacterium Animalis Fermentation Product, Vitamin E Supplement, Iron Proteinate, Zinc Proteinate, Copper Proteinate, Ferrous Sulfate, Zinc Sulfate, Manganese Sulfate, Copper Sulfate, Potassium Iodide, Thiamine Mononitrate, Manganese Proteinate, Ascorbic Acid, Vitamin A Supplement, Biotin, Niacin, Calcium Pantothenate, Sodium Selenite, Pyridoxine Hydrochloride, Vitamin B12 Supplement, Riboflavin, Vitamin D3 Supplement, Folic Acid.


  • The unique blend of proteins offers a unique taste that most dogs seem to enjoy
  • Packed with superfoods for added antioxidant benefits
  • Fortified with probiotics for digestive health


  • Grain-free diets may not be suitable for all dogs, especially those at risk for DCM
  • Some dogs may not like the taste of exotic proteins

11. Just Food for Dogs Large Breed Support Recipe [Best Dog Food for Mastiffs with Food Allergies]

Best Dog Food for Mastiffs with Food Allergies
Just Food For Dogs Large Breed Support

A tasty blend of meat, grains, and vegetables nutritionally balanced for large-breed adults.

See on Just Food for Dogs


This is a great option for owners of mastiffs who are allergic to common proteins.

About: JustFoodForDogs is revolutionizing the limited ingredient dog food category by offering fresh choices developed by veterinarians and dog dieticians. This fresh dog food alternative deviates from the conventional mass-produced dog foods and will be tailor-made to cater to your dog’s requirements, excluding ingredients that could potentially harm your pet.

First Five Ingredients: Beef, Brown Rice, Beef Heart, Carrots, & Green Beans


  • Customized Formulation: This recipe is tailor-made to meet the specific nutritional needs of your dog.
  • High-Quality Protein: Includes real, human-grade protein to support your dog’s muscle health and overall wellbeing.
  • Diverse Menu: Available in both grain-free and grain-inclusive varieties to accommodate your dog’s dietary needs.
  • No Harmful Additives: This recipe is free from preservatives or hormones, ensuring a natural and healthy meal for your pet.
  • American Made: Just Food for Dogs recipes are made in the USA.

Ingredients List

Beef, Brown Rice, Beef Heart, Carrots, Green Beans...,

Beef Liver, Sunflower Oil, Flaxsed Oil, Fish Oil, Calcium Carbonate, Dicalcium Phosphate, DL-Methionine, Choline Chloride, Potassium Chloride, Potassium Iodide, Salt, Shellfish Shell Meal, Beef Cartilage, Taurine, Vitamin E Supplement, Ferrous Amino Acid Chelate, Zinc Amino Acid Chelate, Selenium Yeast, Cholecalciferol, Riboflavin


  • JFFD makes it easy to manage your dog’s allergies or intolerances
  • Appeals to even the fussiest of dogs
  • Can be bought online or picked up at CA retail stores or select Petco stores across the US
  • Backed by a a money-back guarantee


  • Requires refrigeration or freezing
  • Is comparatively expensive

General Food-Selection Advice & Tips

picking dog food

It’s crucial to understand that the majority of contemporary, popular dog foods are completely suitable for most mastiffs. 

However, you’ll also want to select a food that meets three mandatory criteria:

  1. Select a food for your mastiff that is specifically designed and engineered to meet the Association of American Feed Control Officials (AAFCO) nutritional guidelines. These guidelines are carefully structured and assure that the food contains all the necessary nutrients, vitamins, and minerals that your mastiff needs according to his life stage. This will ensure your dog’s health and well-being are supported as he grows and ages.
  2. Prior to deciding on a particular dog food, consult with your veterinarian. Your vet can provide expert advice based on his or her knowledge of your dog’s health history, breed-specific nutritional needs, and any potential dietary restrictions. Your vet can also help you understand the complexities of dog food labels and guide you towards choosing the best possible option.
  3. If your mastiff has any specific health conditions or concerns, it’s important to choose a dog food that caters to these needs. Dog food manufacturers often offer special formulas designed for a range of health issues, from joint problems to sensitive stomachs. By selecting a food tailored to your dog’s health condition, you can help manage his symptoms and improve his overall health.

By following these steps, it’s highly likely your mastiff will remain healthy and happy.

However, there are a few other things you can consider to ensure he’s getting the very best of the best:

  • Does the brand employ a canine nutritionist? A canine nutritionist is a professional who understands the unique dietary needs of dogs and can help formulate balanced and nutritious meals for dogs. It is important to know if such a specialist is part of the brand’s team to ensure that the dog food created is indeed nutritionally balanced and suitable for dogs.
  • How frequently does the company conduct safety inspections? Regular safety inspections are crucial to ensure that the manufacturing process is up to the standards of hygiene and safety. It also ensures that the ingredients used are fresh and free from any harmful substances.
  • Is a whole protein listed as the first ingredient in the dog food? The first ingredient listed on the packaging is the one that makes up the largest part of the food. A whole protein being listed first indicates a high-protein diet which is beneficial for dogs.
  • Are the meat meals and by-products clearly identified in the ingredient list? Transparency in ingredient labeling allows pet owners to know exactly what their pet is eating. Clear identification of meat meals and by-products will help you avoid allergic triggers and give you more peace of mind.  
  • Does the brand avoid using questionable or unnecessary ingredients? Unnecessary additives or questionable ingredients can potentially harm a dog’s health. Instead, look for foods that rely on high-quality ingredients and leave out things like artificial colors and flavors.
Pet-Care Pro Tip: Change Foods Gradually

It is crucial to change your dog’s food gradually to avoid any potential digestive upset or tummy trouble.

To transition your dog to a new food, start by mixing a small amount of the new food with your dog’s current food. Gradually increase the amount of new food while decreasing the amount of the old food over a period of 7 to 10 days.

This slow transition will allow your dog’s digestive system to adjust to the new food comfortably and healthily.

Best Dog Food for Mastiffs: FAQ


Still have questions about the best way to feed your mastiff? We’ve got ya covered! Check out some of the most common feeding questions mastiff owners have below.

What is the best dog food for a mastiff?

The very best food for your mastiff will depend on numerous factors, ranging from his life stage to any health issues he suffers from. However, Nom Nom is a great option for most mastiffs, though Blue Buffalo Large Breed Chicken and Rice is a more budget-friendly choice for most pet parents.

When should I switch my mastiff to adult dog food?

Consult your vet to determine the optimum time to switch your mastiff to an adult dog food. However, as a general rule, most mastiffs will be ready for an adult dog food at around 12 to 14 months of age.

Are mastiffs healthy dogs?

Mastiffs are generally healthy dogs, although they can suffer from a variety of health problems, ranging from joint problems to pancreatitis. They’re also susceptible to weight gain, which can exacerbate the problems caused by other ailments.

Can mastiffs eat raw meat?

It’s generally unwise to feed any dog raw meat. Raw meat is dangerous for dogs, and uncooked proteins often contain pathogens that can make your mastiff very ill.

Now that you’ve found the perfect food for your mastiff, be sure to pick up a crate large enough for his big ‘ol body!


We hope that you’ve found a great food for your massive mastiff among the recommendations above. Just remember to keep your vet in the loop and don’t be afraid to try several different options until you find the one that works best. 

We would love to keep the conversation going! Let us know what you feed your mastiff (or any foods that haven’t worked well) in the comments. 

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Written by

K9 of Mine Staff

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