Skip to Content

How to Make a Mastiff Gain Weight? (Explained for Owners!)

If you already have a mastiff and wondering why your dog is underweight, it must be quite frustrating. All mastiffs are supposed to reach a certain weight at a certain age. If it does not reach its optimal weight range, it will be wise to undergo extensive research about it.

To ensure mastiff growth and bring their weight back to normal, give a quick read!

How to make a mastiff gain weight? 

Foods that are high in protein and fat are beneficial for mastiffs for weight gaining. Feeding a mastiff higher-fat and relatively higher amount of protein-rich foods will help him steadily increase weight over time. Such foods will help to gain weight in a healthy way.

Foods rich in protein and fat will assist mastiffs to gain weight in a sustainable method. A proper diet rich in vitamins and nutrition is also helpful. The weight differences should be noticeable in only a few weeks if a proper diet chart is followed.

Why is my mastiff so skinny?

Weight loss in mastiffs can be caused by a wide range of illnesses and issues. Here are some possible causes why your mastiff is skinny.

Issues related to food:

Mastiffs lose weight for sudden changes and reformulation in their regular food diet or dog food. Sometimes in stressful conditions, dogs may develop an aversion to eating.

Diabetes Mellitus in dogs:

Diabetes mellitus is a kind of disease in dogs that causes fast weight loss. Mastiffs suffering from diabetes mellitus develop symptoms like excess water consumption, frequently urinating, etc. This is a reason for weight loss in mastiffs.

Pain Issues:

Physical illness and disorders like abdominal pain, vomiting, gastric formation in the stomach, drooling, etc. cause Mastiff to lose weight.

Moreover, sometimes one or more elements in a dog’s food might cause severe stomach problems. Bloating, cramping, and gas make the mastiff feel uneasy after eating, causing them to lose interest in their regular meals.


Weight loss is one that mastiff may be suffering from cancer. Weight loss is one of the first signs of Mastiffs because cancer affects the way the body utilizes nutrition.

Kidney and heart problems:

Other diseases like kidney and heart problems and parasites affecting weights in mastiffs.

How to make a mastiff gain weight?

There are a number of healthy ideas and methods to help mastiffs gain weight whether he is losing weight due to old age or just wants to add a few pounds. The dog’s health is crucial and must be balanced between proper nutrition intake and exercise.

Feeding the mastiff’s high-quality calories:

Increasing calorie intake is necessary to bulk up the mastiff. To assure its body is absorbing those calories to develop muscle and give energy, it must have a proper mix of high-quality calories and exercise.

Select dog foods which contain high quality and rate of calories. Mastiffs need more amount of calories to maintain proper body weight. This type of food will you’re your mastiff to gain few extra pounds within a short time period.

Giving Protein-rich foods and Fat foods:

This method of feeding Mastiffs foods rich in protein and fat is an effective way for them to gain weight. These nutrients help in the development and growth of young mastiffs.

Feeding meals with more protein and fat will help the dog acquire weight over time.

This approach is designed to help him acquire weight slowly. Within a few weeks, you will notice visible changes in your mastiff bodyweight if given more protein and fat.

Set a new feeding schedule:

You can make your mastiff gain weight by following this method.

Consider feeding your mastiff a smaller quantity of food in the morning and a bigger one at night. This will allow his body to retain fat instead of burning it as he sleeps.

This approach also prevents your dog from burning unnecessary calories while exercising all through the day.

Feeding little meals regularly is another way to obtain weight. You may provide your dog with nutrition throughout the day by dividing his daily food allowance into four or five meals. This will allow your dog to ingest more calories by eating all through the day.

Feeding your Mastiff Fresh and Wet foods:

Foods like fresh pumpkins and Sweet potatoes are great for weight gain in mastiff dogs.

Try adding pumpkin or sweet potato to your dog’s regular meals if you want to help him gain more weight.

This increase in fat and fiber will help him gain weight, and the nutrients in it will keep his stomach clean.

How much should a Mastiff weigh?

With substantial body weight from birth and a strong, muscular body formation, the mastiff is truly giant among most dog breeds. The weight of your mastiff puppy will be determined by its breed. Normally mastiffs are big-sized dogs and they have a quick growth rate than others.

A mastiff begins life weighing just under 1 pound (0.45 kg), and grows gradually during the first year to weigh between 110 and 145 pounds (50 to 68 kg). At the age of three, a fully grown mastiff will have a weight of up to 200 pounds (91 kg).

How long does it take for a dog to gain weight?

On a raw diet, a dog can grow up to 20 pounds in just three to four months. It might take up to 6 months or sometimes more to gain weight if the dog is malnourished. However, it largely depends on how you feed it, how much you feed it, and the quality of the food.

Taking good care of your dog is important and has a direct and significant role in weight gaining in dogs. From the moment he is born, a puppy should start growing weight. Normally each day, he should gain between 10 to 13% of his birth weight.

Should mastiffs have raised bowls?

Mastiffs normally need to be raised bowls as they have by born giant muscular body composition. Elevated or raised food bowls are convenient and a good choice for mastiffs who have mobility issues.

In addition, raised dog food bowls can be beneficial for mastiffs with a variety of medical issues. It may be difficult for a mastiff to eat from the ground if he has neck pain. In such a case, he would need a raised bowl.

Raised bowls might be helpful to mastiffs suffering from arthritis and neck tenseness. A raised bowl may be suggested by a veterinarian if the mastiff has a megaesophagus.

Why is my English mastiff so small?

Mastiffs are normally bigger in size and height than the other dog breeds. If your mastiff is small and not growing, it can be problematic. Some reasons can cause your mastiff to stop growing.

Hookworm or roundworm infection is very common among dogs which delays its development process. If a dog has a severe worm infestation, the worms can take many calories from the body to cause her growth to be slowed.

In addition, lack of proper nutrition and the right amount of protein in dog food also is one reason for mastiffs not growing enough. It should be done patiently. Because the English Mastiff is a massive dog with a lean, muscular physique that takes a long time to grow.

How big will my English mastiff get?

The adult English mastiff is a large, tough dog with a lot of strength. The size of these breeds depends on their genetics. However, there is an average size up to which an English Mastiff can grow.

A complete grown male Mastiff weighs between 161 and 220 pounds (73 to 100 kg). On the other hand, female mastiffs are comparatively much smaller, weighing between 120 and 170 pounds on an average (54.4 to 77 kg).

This makes this breed one of the heaviest dogs on the planet!

Male English Mastiffs are around 30 inches (76 cm) tall, while females are 27.5 inches (70 cm) tall. Some of these dogs, on the other hand, completely beat the odds. For example, Zorba was an exceptional English Mastiff breed with a shoulder height of 38 inches (96.5 cm).

What mastiff is the strongest?

The Fila Brasileiro Mastiff is the strongest among the mastiff breeds. These kinds of mastiffs are large, strong, and robust dogs. The Fila Brasileiro Mastiff is a Brazilian mastiff breed.They have a strong desire to hunt and capture prey.

They have a reputation for being ferocious guard dogs. This dog isn’t generally calm and docile, but with the right training, it can be a great asset to its owners. They are big, strong, and clever, with exceptional abilities. They are, however, aggressive and suspicious about outsiders.

Which mastiff has the strongest bite?

The Italian Mastiff or Cane Corso is the strongest among the mastiff dog breeds in terms of biting force, at 700 PSI. Cane Corso is a big dog breed that was mainly bred as a hunting dog. However, it is a very gentle and loving dog to both humans and other dogs.

The English Mastiffs are also well known for their powerful biting traits. As the Mastiff’s biting force is around 552 PSI, it’s necessary not to upset the dog or expose it to strangers until it’s properly trained.

Final Thought:

Although mastiffs are not delicate creatures, they require full attention in terms of nutritious food. To reach an optimal weight, they should always be fed Mastiff food with high levels of protein, fats, and calories. Additionally, it must be fed such food regularly to ensure a faster process.

Frequently Asked Questions:

Are Mastiffs High Energy or Lazy Dogs?

How Big Does the Mastiff Get?

Why Are Mastiffs So Expensive?

Why is My Mastiff so Scared?

Do Mastiffs Bark a Lot?

How Do Mastiffs Show Affection?