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What Is A Bullmastiff

What Is a Bullmastiff?

Today we are looking at a big powerful breed and asking the question What Is a Bullmastiff? Let’s try to find out.

The Bullmastiff is a huge dog of mastiff-type and size, with a strong frame and a short muzzle that originated in the United Kingdom.

Crossbreeding the English Mastiff with the now-extinct Old English Bulldog resulted in the development of this breed as a guard dog in the nineteenth century. The Kennel Club officially recognized it as a distinct breed in 1924.


The Bullmastiff’s origins are a mystery to this day. In some parts of England throughout the nineteenth century, the Old English Mastiff and the English Bulldog were frequently interbred to produce dogs who were appropriate for working as guard dogs for humans and their possessions.

By the beginning of the twentieth century, this cross-breed was in common use as a tool to assist gamekeepers in their efforts to keep poaching under control.

They were developed by gamekeepers for their strength, size, and speed through a cross between the tough, heavy, and aggressive Bulldog of the nineteenth century and the massive, strong, and less aggressive Mastiff of the twentieth century, among other things. In recognition of their abilities, the Bullmastiff is commonly referred to as the Gamekeeper’s Night Dog.

It was not until 1924 that the Bullmastiff was officially recognized as a breed by the Kennel Club. Dogs had to be descended from Bullmastiff stock for a least of four generations, with no input from either Bulldog or Mastiff, in order to be eligible for registration; cross-bred animals were not permitted.

It was officially recognized by the American Kennel Club in 1934. In 1955, the Fédération Cynologique Internationale formally recognized it as a scientifically valid concept.

Bullmastiffs were first transported to South Africa in 1928 by the diamond mining corporation De Beers to guard the mines there.

Bullmastiff Size

The Bullmastiff is a huge dog with a powerful bite. Bitches stand approximately 61–66 cm at the withers and weigh approximately 41–50 kg; on average, dogs stand approximately 3 cm taller and weigh approximately 9 kg more.

Fawn, red, or brindle coats are permitted in any shade; however, a small amount of white marking on the breast is permissible. The muzzle is black, and it becomes paler as it gets closer to the eyes. It is a brachycephalic dog, meaning it has a flat face and a short muzzle, yet this does not impede its ability to breathe. 

Health Concerns

Concerns about health in the breed include hip and elbow dysplasia, progressive retinal atrophy, bloat, and cancer, particularly lymphoma and mast cell tumors, which occur at a somewhat high rate in the breed.

Bullmastiffs are susceptible to a number of genetic disorders, including the following:

  • Hip dysplasia is a condition that affects 24.5 percent of the population.
  • Elbow dysplasia is a condition that affects 13.8 percent of the population.
  • Entropion and hypothyroidism are two conditions that afflict 2.8 percent of the population.

Lymphoma Because progressive retinal atrophy is an autosomal dominant feature, it is a particularly difficult problem to deal with.

The validity of this claim has since been called into question by another medical team, and it has been demonstrated that certain Bullmastiffs have autosomal recessive PRA genes).

In the United States, the American Bullmastiff Health and Research Committee are looking into this, and because the DNA Optigen test only works for dominant genes, it is now regarded as inadequate.)

Bullmastiff Lifespan

According to a survey conducted in the United Kingdom and based on the lifespan of 96 Bullmastiffs, the median age was 7.5 years.

Bullmastiff Temperament

The abrasive nature of the personality.

Many Bullmastiffs are willful and dominating (they want to be the boss), and they will make you prove that you have the ability to command them to do something.

These are not dogs for inexperienced or first-time owners as a result.

You need to be the leader and these guys will not let you if you don’t have the confidence or skillset. Firm and fair positive reinforcement training are key with these guys.

Are Bullmastiffs Aggressive?

Bullmastiffs have a strong sense of self and are not easy to raise and train because of their independent nature.

Animal aggressiveness is a possibility.

Several Bullmastiffs will not tolerate another dog of the same gender, and some will not tolerate another dog of the opposite gender as well.

Some Bullmastiffs have great instincts to chase and grab cats and other fleeing animals, which they use to their advantage.

In the event that something goes wrong during the breeding process, socialization, training, or management of this species, it has the potential to cause serious injury or death to other animals.

Providing an adequate amount of socialization.

The majority of Bullmastiffs are protective of their owners and other people. They require a lot of exposure to pleasant individuals in order to learn to recognize the regular behaviors of “nice guys.” Then kids will be able to tell the difference when someone behaves in an atypical manner.

They may become skeptical of everyone if they are not properly socialized – this is certainly not a healthy condition!

Early socialization classes are a must so that they can become the dog you want them to be.

Are Bullmastiffs Easy to Train?

As we have already established, training has to be high quality and consistent. Reward-based and positively reinforced just like this superb training course that we recommend you take a look at.

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Recommended Exercise For Your Bullmastiff

How much exercise does a Bullmastiff require as an adult?

Bullmastiffs require only about 2 hours of daily activity to maintain a healthy lifestyle, despite their great size.

Due to the fact that they were initially designed to be guard dogs, they are quite content to lay around the house for lengthy periods of time during the day. Bullmastiffs are highly active and playful dogs, especially when they are young and impressionable.

Due to their big size, it is important not to overdo things with them when they are puppies, as this can be detrimental to their growth and development.

Don’t overdo it!

It is also important to remember that because the Bullmastiff is a heavy-set breed, you should avoid excessive strenuous exercise – a Bullmastiff is not an excellent running partner!

Every day, your Bullmastiff will require a least two hours of physical activity. Aim for a few walks with off-leash time in a safe environment to make the most of your time together.

Your Bullmastiff will also enjoy training sessions with you as a result of the above.

They are clever canines who are fast to learn and enjoy a good challenge.

They’ll also get to spend a lot of time playing with you and having free time in a large, safe garden.

Grooming & Coat Care

What Is A Bullmastiff

Bullmastiffs have coats that require little upkeep. In order to keep dead hairs under control, a weekly brushing should be sufficient.

While they do shed (as do all dogs), it is not thought to be excessive in this breed.

Unless your Bullmastiff needs a wash (which is unlikely given their big size), you should avoid taking him to the groomer.

Remember to keep the face of your Bullmastiff clean and dry at all times.

This may necessitate frequent attention in order to avoid contracting any terrible diseases. Bullmastiffs are notorious for drooling profusely.

The fact that they don’t shed much is more than compensated for by their dribbling. Perhaps you’d like to carry a cloth with you for wiping up spills on the go.

Are Bullmastiffs Good Family Dogs?

Are bullmastiffs good around children?

Bullmastiffs and young children are not a good combination.

Even though Bullmastiffs are extremely loyal to their owners, their big size and muscular strength make them unsuitable for households with little children or elderly people.

Given their tendency to be boisterous and energetic, there is a chance that they will accidentally bump into children and knock them to the ground.

They are better suited to houses with only adults or families with older children who are familiar with how to behave around dogs.

You’ll need to keep a close eye on your Bullmastiff while it’s around children or elderly people.

Make sure you are aware of their body language so that you can intervene if the game becomes too much for your dog or if they become overexcited.

Bullmastiffs are extremely strong and stubborn, and they have a tendency to do things their own way, which can be challenging for other members of the family.

They will, however, respond positively to early and persistent obedience training that incorporates leadership, positive reinforcement, and food rewards.

My thoughts:

Overall, they are a wonderful, capable companion for positive & forceful owners, but they are too much for them to handle if they do not devote ongoing time and effort to socializing and supervising them.

You simply can not afford to let a big dog that is also this smart think they are in charge. 

Bullmastiffs are beautiful dogs but you really need to be on your A-game to handle one successfully.

Good Puppy Training Tips

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