Are Bullmastiffs Good Guard Dogs? (Expert Opinion)

  • By: Justin
  • Date: January 7, 2023
  • Time to read: 5 min.

There is no surprise that you are interested in this breed. Bullmastiffs are known for their muscular and powerful appearance.

However, Do they make a good guard dog?

Yes, bullmastiffs do make good guard dogs. They are known for their protective nature, impressive strength, intimidating size, loyalty to their family, and they are fearless. Bullmastiffs will alert when strangers are nearby and are excellent guardians. 

In this article, you will learn more about the breed’s history, temperament, and the advantages and disadvantages of having one in your home. 

are bullmastiffs Good Guard Dogs

5 Reasons Why Bullmastiffs Are Good Guard Dogs

1. Protective Nature

When it comes to Bullmastiff’s protective nature, they are known to be excellent for alerting their owners.

If they notice anything that is a potential threat to them, they will bark or growl and physically block the perceived threat from entering their territory. 

Their assertive territorial behavior, size, and strength make a bullmastiff’s presence known to potential intruders. 

2. Extremely Loyal

Loyalty is a crucial trait in any guard dog breed. According to the AKC, bullmastiffs have a strong bond and are incredibly loyal to their owners. 

They are known for being devoted, and they show a lot of patience toward their family. Bullmastiffs are good companions, and won’t hesitate to defend you. In addition, they also make good guard dogs for families.

3. They Don’t Bark Excessively

Bullmastiffs do not bark excessively or become agitated quickly. They have an even temperament and a quiet demeanor. This can be beneficial in other situations, such as going to the park or going to other facilities where the noise level needs to be kept low.

This breed was trained not to bark or bite intruders but to silently, pin and hold them there.

So, if you want a reliable protector without noise disruption, then a bullmastiff might be the perfect fit for you.

4. Impressive Strength

Bullmastiffs have a powerful bite force and are known for their impressive physical strength. They are also highly athletic and excellent sprinters. 

Their strong jaws make them capable of biting down on objects with significant force. According to country living, the bite force of a bullmastiff is said to be around 552 to 556 pounds of pressure. This is considered to be a powerful bite force for a dog.

When it comes to Bit force, it can be helpful when it is time to defend against an intruder.

However, bullmastiffs should only be used for protection with proper guard dog training and supervision.  

5. Intelligent 

Bullmastiffs are known for their intelligence and trainability.

In fact, they’re ranked #69 on the list of most intelligent dog breeds. They’re super quick learners and can pick up commands and tricks in no time.

Plus, they have excellent problem-solving skills – a must-have for a good guard dog.

Breed Characteristics

can a bullmastiffs be a Good Guard Dog
Breed Overview
Height: Males 25- 27 inches
Females 24- 26 inches
Weight: Males 110- 130 Pounds
Females 100- 120 Pounds
Life Expectancy:7-9 years
Club Recognitions:AKC Classification: Working
UKC Classification: Guardian Dog
Grooming Needs:Moderate
Colors:Red, fawn, brindle
Costs:$1000- $3000

Bullmastiffs Temperament

Bullmastiffs are usually very docile, calm, laid back, confident, reliable, and fearless. They are considered to be the ultimate couch potatoes once they are full-grown. Bullmastiffs love nothing more than cuddling up with you.

However, don’t let their laid-back nature fool you; this can quickly change when a stranger enters the picture.

Bullmastiffs are excellent emotional support dogs for people who need affection. They are not high-energy dogs and are not prone to excessive chewing on objects. Which makes them easy to live with. They are also very willing to please their owners and are also known to be good with children. 

Bullmastiffs are ranked 56th among 197 registered breeds by the AKC to be the most popular dogs in 2021.

One thing to remember with Bullmastiffs is that they have difficulty getting along with other pets. They can be dominant and may not always play well with others, especially if they haven’t been properly socialized.

Are Bullmastiffs A Good Choice For First-Time Dog Owners?

No, bullmastiffs are not suitable for first-time owners. All large, powerful guarding breeds take experience, expertise, and dedication to handle them. 

An inexperienced owner will generally need more patience to train these intelligent dogs. Because if you don’t stay dominion over the dog, the dog will not listen to you. This can cause a lot of frustration and problems. 

Many bullmastiffs end up in shelters because they require more time and training than their family can give them. 

Generally, If you’re a first-time dog owner and you’re thinking about getting a Bullmastiff, remember that these pups can be a handful. 

There are better choices for first-time owners. And it’s definitely a good idea to have some expert guidance to help you if you are inexperienced. 

Will An Untrained Bullmastiff Protect Their Owners?

Bullmastiffs are devoted family companions and will keep a watchful eye on everyone in the house. Even if it looks like they are just sleeping. They are naturally protective without any guard dog training.

However, they are more likely to bark if they sense an intruder than to attack them. This is because they have no formal training to attack. 

It is important to remember that these types of dogs need to have proper obedience training and socialization when they are puppies.

Disadvantages of Bullmastiffs As Guard Dogs

  • Banned in several parts of Germany and Australia because they are so-called fighting dogs.
  • They grow into mellow dogs but don’t start that way.
  • They drool a lot and are known to slobber when they’re excited. The drooling can be extreme, especially when eating or drinking.
  • Big in size. Because of their height, they can easily reach and pull stuff off of your countertops.
  • Short life span– you are lucky if your Bullmastiff will last to the age of 7. If you want a dog that has a long life span, then maybe a bullmastiff is not for you
  • Can be prone to stubbornness because of their ancestry to the bulldog.
  • They are prone to heat exhaustion and heat stroke, so they should be kept indoors during hot, humid weather.


The Bullmastiff originated in the 19th century in England. They were created by crossing an old English bulldog with an English mastiff, giving them the strength and ferocity of a bulldog and the size and power of the mastiff.

The England kennel club recognized the breed in 1924, and the American kennel club recognized them in 1933. 

Bullmastiffs were bred by gamekeepers who needed a fierce guardian dog to protect the animals in their charge. And also to keep poachers away. 

Bullmastiffs are incredible guard dogs. They can easily be the perfect bodyguard for your family. If you are looking for a loyal and naturally protective dog that adores children and does not bark a lot like other guard dog breeds, then the Bullmastiff is well worth considering. 

Justin- Writer & Chief Editor of


Justin is a protection dog enthusiast. He has years of experience teaching and training dogs. He enjoys sharing what he’s learned. Read More

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