Bullmastiff vs English Mastiff: What Are 8 Key Differences?

Written by Jennifer Gaeng
Updated: October 26, 2023
Share on:

Advertisement


Are you looking for a gentle giant but unsure whether to choose an English Mastiff or a Bullmastiff? Although both types are Mastiffs, there are numerous distinctions to consider. The mastiffs are enormous, powerful dogs that rank among the largest dog breeds in the world. Both are pets that can be kept in the home. There are some distinctions between the Bullmastiff and the English Mastiff, which we will explore in this article.

Key Differences Between Bullmastiff and English Mastiff

A major difference between Bullmastiff and English Mastiff is size.

The most evident difference between the two breeds is their size, with the English Mastiff being far larger than the Bullmastiff. Although there are other distinctions between them, just one could be the deciding factor in determining which dog is right for you. The English Mastiff is a purebred while the Bullmastiff is a cross between an English Bulldog and an English Mastiff. Let’s unravel more differences together.

Bullmastiff vs English Mastiff: A Comparison 

BullmastiffEnglish Mastiff
Height25 – 27 inches27 – 30 inches
Weight100 to 130 lbs.120 to 230 lbs.
Coat typeShort, Dense, Weather-Resistant Single CoatShort, Dense, Straight, Double coat
ColorsFawn, Reddish Brown, BrindleApricot, Fawn, Brindle
TemperamentDocile, Dependable, CalmIntelligent, Affectionate, Cheerful
Sensitivity LevelsAbove AverageAverage
Life Expectancy7 to 9 Years7 to 10 Years
Health ProblemsCardiomyopathy, PRA, Stomach TorsionCardiomyopathy, Hip Dysplasia

Bullmastiff vs English Mastiff: Height

Both dog breeds are huge, with the English Mastiff bigger than the Bullmastiff. Bullmastiff males reach a height of 25 to 27 inches, while females reach a height of 24 to 26 inches. When completely mature, male English Mastiffs stand 30 inches tall, while females stand 27 inches tall.

Bullmastiff vs English Mastiff: Weight

close up of an English mastiff laying in grass

The English Mastiff weighs between 120 to 230 pounds, making it the heaviest dog in the world.

©Kachalkina Veronika/Shutterstock.com

Male Bullmastiffs often weigh between 110 and 130 pounds, while female Bullmastiffs typically weigh between 100 and 120 pounds. The average adult male English Mastiff weighs between 160 and 230 pounds, while the average adult female weighs between 120 and 170 pounds.

Bullmastiff vs English Mastiff: Coat Type

Bullmastiff coats are short, dense, and rough, providing excellent protection against rain, snow, and cold. The English Mastiff’s coat consists of two layers: a dense, shorter undercoat and a short, straight outside coat.

Bullmastiff vs English Mastiff: Color

Bullmastiffs can have fawn, reddish-brown, or brindle coats. They occasionally have specks and bands of light and dark markings on their faces and ears, as well as a black muzzle and ears. Colors available for the English Mastiff Coat include fawn, apricot, and brindle.

Bullmastiff vs English Mastiff: Temperament

Bullmastiff laying down with its tongue out

Bullmastiffs are excellent family pets.

©Olga Aniven/Shutterstock.com

The English Mastiff and the Bullmastiff have a similar disposition; both are loving, loyal, and protective of their family, and both have an abundance of love to give! English Mastiffs make excellent family pets since they are gentle friends and non-aggressive family protectors. These courageous but well-behaved canines are adaptable to practically any environment. They do not require a large home but do require some additional space.

Bullmastiffs are friendly and caring towards their family members. Their calm, peaceful demeanor makes them perfect pets for families with children. The Bullmastiff is slightly more active and requires more playful exercise than the English Mastiff. Therefore, if you have a yard and seek a more athletic dog, the Bullmastiff would be a better fit. It is crucial to keep in mind, however, that Bullmastiffs are not known to get along well with other pets. Both breeds are fond of children.

Bullmastiff vs English Mastiff: Sensitivity

Bullmastiffs are instinctively protective of their owners and property. If its family is threatened, a Bullmastiff will react appropriately. However, due to the breed’s strength and the tendency for independence, early socialization and training are crucial.

English Mastiffs are inquisitive and courageous by nature. Therefore, early socialization and puppy programs are imperative since an English Mastiff puppy is prone to mischief. Once trained, they become highly versatile and thrive in a wide variety of living settings.

Bullmastiff vs English Mastiff: Life Expectancy

Bullmastiffs live an average of 7 to 9 years, whereas English Mastiffs live between 7 and 10 years. However, some exceptions to this rule have occurred. The longest-living Mastiff was a female named Kush, who lived to be nearly 15 years old in Australia!

Bullmastiff vs English Mastiff: Health Problems

Bullmastiff standing in front of bush

The Bullmastiff is prone to major health conditions.

©volofin/Shutterstock.com

As a breed, the Bullmastiff is susceptible to hemangiosarcoma, osteosarcoma, mast-cell cancers, lymphosarcoma, hypothyroidism, and sub-aortic stenosis, among other severe health conditions.

Minor health issues, such as osteosarcoma, elbow dysplasia, and cystinuria, can affect the English Mastiff, as can serious health issues, such as canine hip dysplasia (CHD) and stomach torsion.

Do Bullmastiffs Bark A Lot?

Bullmastiffs are inherently friendly and trustworthy dogs, although they do benefit from proper training by their owners to ensure well-behaved social interactions. One notable characteristic of Bullmastiffs is their typically mild nature, which is accompanied by rare barking.

Bullmastiffs are renowned for their affectionate nature, particularly towards their owners and young children. While they exhibit moderate playfulness and an openness to strangers, it’s their keen sense of vigilance that truly shines, making them exceptional watchdogs.

These lovable giants can be wonderful long-term companions, but early training and socialization are vital for them to grow into well-behaved adults.

Fortunately, Bullmastiffs are highly trainable and can be a ball of energy. Owners should be prepared for engaging play sessions throughout the day to meet their dogs’ need for mental stimulation and activity.

Wrapping Up Bullmastiff vs English Mastiff

Even though the two mastiff breeds share a similar origin, they are still distinguishable from one another. Although both species make fantastic family dogs and are well-liked by many, some people choose alternative breeds due to the enormous size of these gentle giants. Overall, adopting one of these pups means you’re committed to a dog around the same size as a human. On the other hand, you will have a loyal and loving companion.

The photo featured at the top of this post is © BORINA OLGA/Shutterstock.com

Ready to discover the top 10 cutest dog breeds in the entire world?

How about the fastest dogs, the largest dogs and those that are -- quite frankly -- just the kindest dogs on the planet? Each day, AZ Animals sends out lists just like this to our thousands of email subscribers. And the best part? It's FREE. Join today by entering your email below.

What's the right dog for you?

Dogs are our best friends but which breed is your perfect match?

X-Small
Small
Medium
Large
Xtra-Large

If you have kids or existing dogs select:

Kids
Other Dogs

Should they be Hypoallergenic?

Yes
No
How important is health?
Which dog groups do you like?
How much exercise should your dog require?
What climate?
How much seperation anxiety?
How much yappiness/barking?

How much energy should they have?

The lower energy the better.
I want a cuddle buddy!
About average energy.
I want a dog that I have to chase after constantly!
All energy levels are great -- I just love dogs!
How much should they shed?
How trainable/obedient does the dog need to be?
How intelligent does the dog need to be?
How much chewing will allow?

Share on:
About the Author

Jennifer Gaeng is a writer at A-Z-Animals focused on animals, lakes, and fishing. With over 15 years of collective experience in writing and researching, Jennifer has honed her skills in various niches, including nature, animals, family care, and self-care. Hailing from Missouri, Jennifer finds inspiration in spending quality time with her loved ones. Her creative spirit extends beyond her writing endeavors, as she finds joy in the art of drawing and immersing herself in the beauty of nature.

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.