Best Dog Food For Mastiffs: Puppies, Adults & Seniors

All dog breeds have the same basic nutritional requirements, but they all have their own unique needs that require attention. The Mastiff is one of the largest dogs on the planet, so not only does he need a lot of food, but he also needs high-quality protein to keep his large muscle mass functioning as it should. His joints also come under a lot of pressure when compared to a Chihuahua, so this is something else to consider too!

We believe, as do many other canine nutritionists and Veterinarians, that dry kibble is the best, and easiest way, to provide him with all of the nutrients that he needs. Not only does it provide him with rich meaty protein, but it also includes fiber, vitamins and minerals, all of which he couldn’t get from a raw diet alone. 

This comprehensive guide to Mastiff nutrition will cover each life-stage, and we will run you through what nutrients he needs when he is a puppy, adult and senior. We also take a look at each brand offood we think is the best dog food for mastiffs at every stage of their life.

At a Glance: Our Favorite Foods For Mastiffs

Puppies: Orijen Large Breed Puppy Food
Adults: Blue Buffalo Wilderness Large Breed
Seniors: NUTRO Wholesome Senior

Note: Clicking the above links will take you to Amazon.com, where you can get additional product information and customer reviews. If you make a purchase, we earn a commission at no additional cost to you.

Nutrients For Mastiff Puppies

Mastiffs are one of the largest dog breeds in the world, so they have a lot of growing to do to reach their typical weight of 120 to 230 pounds. Firstly, if you avoid all ‘life stage’ formulas, as puppies have very different nutritional needs compared to an adult or a senior, and he will miss out on the crucial nutrients and specific fat and calorie content that he needs for, arguably, the most important developmental stage of his life.

Stick to large breed puppy formula as it is designed to suit the accelerated growth rate of large breeds, and they will have the optimum calcium and phosphorus levels that Mastiffs need to ensure that his bone health is what it should be, otherwise you could risk the health issues mentioned above.

Higher levels of calcium and phosphorus, or the same levels of that in smaller breed food, is believed to be linked to Developmental Orthopedic Disease in larger breeds, so sticking to kibbles designed for larger breeds is crucial for your Mastiff. According to the Research Council of the National Academies, a Mastiff puppy weighing 160 pounds will need around 3490 calories every day, however, each of the kibbles below provides guidelines on how much food to feed your Mastiff puppy dependent on his weight.

Nutrients For Adult Mastiffs

Typically, once your Mastiff reaches the age of 12 months you can slowly switch him to adult food following our transitional chart below. According to the Research Council of the National Academies, an adult Mastiff weighing 200 pounds will need approximately 3700 calories every day. Thankfully each of the kibbles below provide guidelines on how many cups of food your adult Mastiff will need each day depending on his weight.

Like our puppy recommendations, it is important to feed him kibbles specifically designed for larger breeds, simply because they have unique nutritional needs. High quality protein and energy is important for the adult Mastiff, because he needs the energy to keep him sustained, as well as omega 3 fatty acids for his skin and cardiac system, and fiber for his digestive tract.  This is true for Mastiff purebreds, but also mastiff mixes that are still large breed, like the Mastador or the American Mastiff which is a mix between an English Mastiff and Anatolian Shepherd.

Nutrients For Senior Mastiffs

As the Mastiff has a shorter lifespan, he is considered to be a senior much earlier than most other breeds. Around the ages of around 6 and 7 he will be considered to be a senior pooch, but this can vary between dogs, so if you are in any doubt then ask your Veterinarian when you should switch him to senior food.

Senior food contains fewer calories and fat compared to adult or puppy formulas, simply because they lead a less active lifestyle and do not need as much energy. Seniors require specific nutrients, including extra omega 3 and 6 fatty acids, such as salmon oil and higher concentrates of glucosamine and chondroitin.

These will help to support his wearing joints and bones, and so for this reason it is important to stick with large breed formula. Whilst he still needs protein, he needs less of it, and higher levels of antioxidants and vitamins are needed to strengthen his aging immune system.  As your Mastiff ages, you’ll likely want to keep him on food that will aid in healthy joint promotion.


Best Food For Mastiff Puppies

Best Food For Mastiff Puppies
Mastiff puppies need lots of calories and nutrient-dense food to help them grow.

We have scoured the market to find the best high-quality natural kibbles for your Mastiff puppy. Not only do all of the recommendations here comply with AAFCO’s guidelines, but they are also highly rated by large breed dog owners across the world. Large breed puppies have different nutritional needs than smaller breeds or medium sized breeds, so the food you feed them will differ from the food you’d feed a Boxer or the food you’d feed a Siberian Husky.  So, in no particular order, here are what we feel is the best food for Mastiff puppies.

 
Instinct Puppy
Fromm Puppy
Orijen Puppy
Blue Buffalo
Wellness Complete
Protein
33.5%
26%
38%
35%
29%
Fats
18.5%
14%
16%
14%
13%
Fiber
5%
5.5%
6%
6%
5%
Kcal/Cup
485
384
449
411
367

Instinct Large Breed Puppy

Instinct Raw Boost Large Breed Puppy Grain...
  • GRAIN FREE PUPPY FOOD WITH FREEZE DRIED RAW CAGE FREE CHICKEN:...
  • PUPPY DOG FOOD PLUS FREEZE DRIED RAW PIECES: Made with calcium &...
  • THE FIRST RAW BOOSTED LARGE BREED PUPPY KIBBLE: Raw Boost mixes...
  • POWER OF RAW INGREDIENTS: Our dog food is made with the pure,...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe has the highest number of calories per cup compared to the other kibbles on this list, so it is perfect for those Mastiff puppies who are particularly playful or energetic and need extra sustenance to keep them going. It is packed with a mixture of high-quality protein such as chicken, fish meal, lamb meal and chicken liver which is great for his large muscle mass. It has omega 3 fatty acids from salmon oil to promote a healthy coat, and live probiotics to add healthy digestion.

It is boosted with the nutrients that large puppies need, such as the optimum levels of calcium and phosphorus for his fast growing bones and joints. This grain free recipe is great for those puppies with sensitive stomachs, or for those parents who chose not to feed their puppy any grains, and it has no preservatives or additives.

We love that this recipe has freeze-dried raw chicken pieces as well as the crunchy kibble bites, and not only are they full of nutrients but they add flavor and extra texture that your Mastiff will love.


Fromm Large Breed Puppy

Fromm Family Foods Gold Large Breed 15 Lb...
  • Only The Highest Quality Ingredients Available Are Used In Fromm...
  • Many Variety'S Available From Puppy To Senior
  • The Best Dog Food Money Can Buy

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe is made with no corn, wheat or soy, and it is made with a moderate amount of protein for those parents who chose not to feed their Mastiff high amounts of protein. It is enhanced with probiotics to promote a healthy gut flora, which will keep his stools firm and help to keep his famous flatulence to a minimum. It also has added salmon oil and flaxseed which is a source of omega 3, which nourishes his skin.

It has added vitamins and minerals to help strengthen his growing immune system, and lists taurine, which is important for the Mastiff’s cardiac system. It also lists cheese in the ingredient list, which is small enough not to give him too much calcium, but enough that it will keep him satisfied.

We love that this recipe has a low calorie count, which makes it the perfect option for those Mastiff puppies who are particularly idle, and it has grains in the recipe which makes it the better option for those parents who do not wish to feed their puppy a grain free diet.


Orijen Large Breed Puppy

ORIJEN Dry Dog Food, Puppy, Biologically...
  • ORIJEN Puppy dog food delivers a diet rich and varied in fresh,...
  • With 85% quality animal ingredients, ORIJEN nourishes dogs...
  • Using fresh and raw animal ingredients, including meat, organs,...
  • Our Fresh Regional Ingredients are supplied by people we know and...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This premium recipe is made with high-quality ingredients, all of which are fit for a king. It is made with 85% animal protein sources and uses the organs and bones in addition to just meat, which is what your Mastiff’s ancestors would have eaten, and it is a great source of glucosamine and chondroitin for his growing bones and joints. It is also made with 15% fruit and vegetables, which provides him with the nutrients and vitamins that he needs for his developing immune system. 

Pumpkin, zucchini and spinach provide him with the fiber he needs for a healthy digestive tract, and apples and blueberries provide him with his antioxidants. It is infused with chicken and turkey liver which are notorious and extra tasty, with many reviewers commenting that their large puppies could not get enough. Whole fish and herring oils provide him with essential omega 3 fatty acids for his skin and heart, and it is also grain free.

We love that this recipe has the highest protein content thanks to the large amount of high-quality meats. The first 15 ingredients are protein sources, which makes this premium kibble unparalleled when it comes to meaty goodness. It is also a biologically appropriate recipe, which means that this diet will nourish him just as nature intended.


Blue Buffalo Large Breed Puppy

Blue Buffalo Wilderness High Protein Grain...
  • PACKED WITH REAL CHICKEN: A recipe made to satisfy your puppy’s...
  • GRAIN FREE PUPPY FOOD: BLUE Wilderness grain free large breed...
  • WITH LIFESOURCE BITS: This formula contains BLUE’s exclusive...
  • NATURAL DOG FOOD: BLUE dry dog food is formulated for the health...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe is packed full of real chicken and chicken meal, which makes it a great source of protein for his muscle mass and growing bones, as well as being a great source of glucosamine and chondroitin. It also has docosahexaenoic acid (DHA) and arachidonic acid (ARA) which is found in mother’s milk which is important for brain development and eye health, which is important for his retinal health concerns.

This recipe is grain free for those puppies who have a sensitive stomach, and instead uses healthy complex carbohydrates such as sweet potatoes and peas to keep him feeling fuller for longer. Many reviewers commented that it was great for their pup’s sensitive stomach. It is also enhanced with an optimum blend of vitamins and minerals that large breed puppies need, which means his immune system will develop into a strong and healthy one.

We love that this high protein recipe also has unique LifeSource Bits which are nutrient-dense for the needs of large puppies.


Wellness Complete Puppy

Wellness Natural Pet Food 89115 Complete...
  • Complete health: Complete and balanced everyday nutrition for...
  • Large breed puppy formula: Larger kibble size, made with...
  • All natural: Contains only premium, all natural ingredients with...
  • Made in USA: Backed by the wellness guarantee and proudly made...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

Wellness Complete focuses on everything, which makes it a kibble complete for all of his needs. The protein sources are listed as deboned chicken, salmon and salmon meal which is vital for his growing muscles and body, and it is also perfect for healthy bone growth. Chicory root extract and sweet potatoes keep him feeling fuller for longer and keeps his gut healthy. Many reviewers love that this kibble has made their large pup’s coat super shiny and healthy, which is due to the added salmon oil and flaxseed.

We love that this recipe has a lot of DHA which is found in his mother’s milk, and it is great for his brain and eye development, and it has the lowest calorie count of this list for those sedentary Mastiff puppies.


Best Food For Adult Mastiffs

Best Food For Adult Mastiffs
Adult Mastiffs need calories, but spread over time. Since mastiffs are grazers, you can feel comfortable free feeding in most cases.

Just like our Mastiff puppy recommendations, our favorite adult kibbles are all AAFCO compliant and they are all highly rated by other large dog owners across the world, so you know that they will be perfect for your adult giant. As the Mastiff is known for Cystinuria we have included kibbles with a lower protein content for those parents who wish to do so, but ones that still offer him what he needs.

 
Holistic Select
Wellness Complete
Merrick Adult
Blue Buffalo
Diamond Naturals
Protein
24%
26%
31%
32%
22%
Fats
14%
12%
15%
13%
12%
Fiber
4%
5%
3.5%
7%
5%
Kcal/Cup
453
340
372
377
320

Holistic Select Adult Giant Breed

Holistic Select Natural Dry Dog Food, Large &...
  • Unique Digestive Health Support: Formulated With A Unique...
  • Large & Giant Breed Formula: A Larger Kibble, Everyday Complete &...
  • All Natural: Contains Only Premium, All Natural Ingredients With...
  • Made In Usa: Backed By The Holistic Select Guarantee And Proudly...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe has a moderate protein content, which makes it an ideal choice for those owners who wish to feed their Mastiff a moderate protein diet. Chicken and pork meal are the two main sources of protein, which are both full of glucosamine and chondroitin for his heavily laden joints. Oats and pumpkin provide him with fiber, and exotic fruits such as papaya and pomegranates provide him with the antioxidants he needs to fight illnesses.

This recipe is made with grains and it is made with both prebiotics and probiotics, which work together to ensure a healthy gut and helps to reduce his flatulence. It also has the highest calorie count per cup, so this also makes the better choice for those Mastiff’s who are particularly energetic.

We love that this recipe is tailored to large and extra-large breeds, which is exactly what the Mastiff is, so you can be sure that the nutrients are perfect for what he needs.


Wellness Complete Adult

Wellness Natural Pet Food 89113 Complete...
  • Designed to meet the needs of large and giant breed dogs 1 year...
  • Made with premium proteins, deboned chicken, whitefish, chicken...
  • Controlled caloric intake to help prevent obesity
  • Glucosamine and chondroitin for overburdened hips and joints

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

If you fed your Mastiff puppy the above Wellness recommendation and he loved it, then chances are he is going to love this too because this is the grown-up version. It offers overall wellness, but focuses on the needs of the large dog, and provides plenty of omega 3 and 6 fatty acids to support his overburdened joints. It also has the optimum levels of calcium, phosphorus and vitamin A for bone and dental health.

Chicory root extract and carrots help to keep him fuller for longer, and healthy carbohydrates offer him the energy that he needs whilst controlling the amount of calories that he eats, so you can be sure that if he is a little lazy he won’t pile on the pounds. It is also enriched with probiotics for a healthy digestive system.

We love that this recipe offers overall wellness, so it is great for his immune system, bone and joint health, skin and coat, digestive health and energy.


Merrick Large Breed Adult

Merrick Grain Free Large Breed Dry Dog Food
  • The Merrick Grain Free dog food story is one of superior...
  • HEALTHY SKIN AND COAT, HIPS AND JOINTS: These grain free dog food...
  • REAL WHOLE FOODS FOR OPTIMAL NATURAL NUTRITION: Merrick Grain...
  • A VARIETY FOR EVERY BREED AND NEED: Merrick Grain Free dog food...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

The protein content of this recipe is the second highest on this list, so this is another great recipe to consider if you want to feed your Mastiff a high protein kibble. Made with 60% protein and 40% fruit and vegetables, this recipe is perfectly balanced with the nutritional needs of large breeds. Despite this, it has the lowest fiber content on this list which makes it the ideal kibble for those who do not do well on a high fiber diet.

It is enriched with vitamins and minerals such as L-Carnitine which is important for his metabolism and Biotin which is important for his skin. His skin also benefits from plenty of omega 3 and 6 fatty acids too, and the salmon oil and flaxseed also help to keep his joints and bones healthy. Many reviewers comment that this kibble was recommended to them as it has the highest amount of supplements just for his joint health.

We love that this recipe is infused with raw pieces that are tasty, nutritious, and full of protein.


Blue Buffalo Adult Large Breed

Blue Buffalo Wilderness High Protein Grain...
  • PACKED WITH REAL CHICKEN: A recipe made to satisfy your dog’s...
  • GRAIN FREE DOG FOOD: BLUE Wilderness large breed dog food is made...
  • WITH LIFESOURCE BITS: This formula contains BLUE’s exclusive...
  • NATURAL DOG FOOD: BLUE large breed dry dog food is formulated for...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe is made with deboned chicken and chicken meal, which makes it a great source of protein for his muscle mass and energy, and his joint needs are also met with plenty of glucosamine and chondroitin. There are plenty of omega 3 and 6 fatty acids which nourish his coat and skin, as well as promote a healthy cardiac system alongside the ingredient taurine.

This recipe is grain free for those who have a sensitive stomach, and to fill him up healthy carbohydrates such as carrots and peas are used, which also aid his digestive system function. It is also enhanced with an optimum blend of vitamins and minerals that are found in their unique LifeSource Bits, which many reviewers said their pooches loved, and it lists cranberries and blueberries which strengthen his immune system.

We love that this recipe has the highest protein content for his muscle mass, and the highest fiber content to aid his digestive tract.


Diamond Naturals Adult

Diamond Naturals Adult Large Breed Real Meat...
  • HIGH quality PROTEIN made with real PASTURE RAISED lamb; tailored...
  • Premium ingredients with added vitamins & minerals; SUPERFOODS...
  • Nutrient rich and HIGHLY DIGESTIBLE with PROPRIETARY PROBIOTICS...
  • FAMILY OWNED & run, MADE in the USA choosing ingredients from...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This kibble is made with lamb meal and egg products, and while it offers the lowest protein levels on this list, it still gives him everything that he needs for his strong and muscular frame. Omega 3 and 6 fatty acids such as flaxseed and coconut nourish his skin and coat and improve his overall wellness.  Omega 3’s are especially important if your mastiff has a longer coat.

It is full of guaranteed levels of specially formulated strains of K9 Probiotics that live in his digestive system to keep it healthy and working as it should. It also has a lot of superfoods listed in the recipe, such as chia seeds, kale and blueberries, which provide his immune system with vitamins and minerals.

We love that this recipe has a lower protein content for those owners who wish to feed their Mastiff a lower-protein kibble, without compromising on quality, as well as being made from lamb which is a great alternative to those Mastiffs who do not like the most common protein source, chicken.


Best Food For Senior Mastiffs

Best Food For Senior English Mastiffs
You’ll want to make sure your senior doesn’t get overweight as seniors tend to get very lazy with age due to their size.

There aren’t many senior kibbles specifically designed for large and extra-large breeds, so here we only have 3 recommendations that we think are perfect for the senior Mastiff.  Your senior mastiff will have different nutritional requirements than as an adult or puppy.  These gentle giants become more gentle in old age, and slow down even more as they grow.  We aren’t in the habit of recommending products that we don’t believe are great for your pup. So, in no particular order, here are our top picks.

 
NUTRO Senior
Blue Buffalo
Science Diet
Protein
22%
20%
19.4%
Fats
12%
10%
15.6%
Fiber
4%
7%
3.3%
Kcal/Cup
315
344
364

Nutro Wholesome Senior

NUTRO WHOLESOME ESSENTIALS Natural Senior...
  • Contains one (1) 30 lb. bag of NUTRO WHOLESOME ESSENTIALS Natural...
  • Farm-Raised Chicken Is The #1 Ingredient To Deliver Great Taste...
  • Nutro Food For Large Breed Senior Dogs Is Made With Natural...
  • Crafted To Help Maintain Cognitive Health And Is Made With...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

Chicken is the first ingredient on this list, and combining this with chicken meal, you can be sure that it is full of protein and meaty goodness that will keep him interested, as well as glucosamine and chondroitin which are one of the most important ingredients for large senior dogs. It also has fish oil and chicken fat which help to keep the kibbles tasty, as well as nourishing his drying skin.

Split peas and sweet potatoes keep him feeling fuller for longer and aid his digestive system. Apples and blueberries provide his immune system with the antioxidants it needs to keep him fighting fit. It is crafted to maintain his cognitive health with added vitamins and minerals too.

We love that this recipe has the highest protein content for those parents wishing to continue feeding him higher protein, and the least amount of calories for those lazier elderly Mastiffs.  If you need a food that’s higher in fiber, NUTRO also offers a high fiber food that you can see here.


Blue Buffalo Large Breed Senior

Blue Buffalo Life Protection Formula Large...
  • REAL MEAT FIRST: Blue Buffalo foods always feature real meat as...
  • FOR LARGE BREED SENIOR DOGS: BLUE Life Protection Formula Large...
  • WITH LIFESOURCE BITS: This formula contains BLUE’s exclusive...
  • A NATURAL DOG FOOD: Formulated for the health and well-being of...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

Deboned chicken is the first ingredient on this recipe, as well as chicken meal being found in the first 5 ingredients too, so he will still get the protein he needs for his large muscles. He will also get the optimum calcium and glucosamine levels needs to support his joints and overall mobility as he ages.

LifeSource Bits are found in this recipe, which will keep him interested in his food, and offer the perfect blend of antioxidants in the form of cranberries and blueberries. Flaxseed and fish oil keep his skin healthy and replenishes his natural skin oils as they dry out. 

We love that this recipe has the highest amount of fiber which makes it a great option for those Mastiffs who suffer with their digestive system.


Hill’s Science Diet Large Breed

Hill's Science Diet Dry Dog Food, Adult 6+...
  • A synergistic blend of easily digestible ingredients to support...
  • Supports your grown dog's joint health with natural sources of...
  • Uses a balanced set of minerals to promote heart and kidney...
  • Nourishes your big dog's skin and supports a shiny coat with...

If you click the link above and make a purchase, we earn a commission at no additional cost to you.

This recipe is made and recommended by Veterinarians and nutritionists across America, so you can be sure that it is perfectly blended for your large senior’s needs. Chicken meal is the first ingredient which is one of the best sources of glucosamine and chondroitin and will keep his joints mobile and supple for many more years to come.

All of the ingredients listed are easily digestible, such as whole grains and dried beet pulp, which is important for his aging and slowing digestive system. A balanced set of minerals and vitamins support a healthy heart and healthy kidneys, which is key for the Mastiff and his potential Cystinuria.

We love that this recipe has the highest number of calories which makes it a great option for those Mastiffs who are still young at heart, and need that extra bit of energy.


Final Thoughts

The Mastiff is a gentle giant who loves us unconditionally, so it is only right that we return our love in the form of the very best nutrition. Their unique body mass and quick puppy growth means that they have different nutritional needs compared to most dogs, so be sure to stick to age appropriate food that is specifically designed for larger breeds.

Remember to keep up to date with regular Veterinarian check ups and be sure to discuss any nutritional questions with them. All of our recommendations in this guide are the very best around and they have been tried and tested all over the world, so if you stick with them neither you, or your Mastiff, will be disappointed.

Leave a Comment

Sign Up!

Get free dog training advice, doggy discounts and more!