Staffy Bull Bullmastiff

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34-120 lbs
Staffordshire Bull Terrier
Staffordshire Bullmastiff

Staffordshire Bull Terriers and Bullmastiffs are bred together to create the hybrid Staffy Bull Bullmastiff, which is a medium to large sized dog with a sweet personality. These dogs may look big and scary, but in reality they are cuddly giants who love their family and are very protective of them. Because of their calm nature, the Staffy Bull Bullmastiff is a great companion for children and can also live in apartments, as long as they are big enough. They have a few health concerns to watch out for, but have a good lifespan of around 12 to 16 years.

Working Dog, Companion
Date of Origin
Staffordshire Bull Terrier, Bullmastiff

Staffy Bull Bullmastiff Health

Average Size
Male Staffy Bull Bullmastiff size stats
Height: 14-27 inches Weight: 38-130 lbs
Female Staffy Bull Bullmastiff size stats
Height: 14-26 inches Weight: 34-120 lbs
Major Concerns
  • Entropion
  • Hip Dysplasia
  • Gastric Dilation Volvulus
Minor Concerns
  • Patellar Luxation
  • Elbow Dysplasia
  • Progressive Retinal Atrophy
  • Cataracts
Occasional Diagnoses
  • Hypothyroidism
  • Deafness
  • Allergies
  • Cardiomyopathy
Occasional Tests
  • Physical Examination
  • Radiographs
  • Urinalysis
  • ECG
  • Optical Exam
  • Schirmer Tear Test
  • Joint Fluid Sample
  • Blood Work
  • Electroretinogram

Staffy Bull Bullmastiff Breed History

The Staffy Bull Bullmastiff is a designer dog breed created from crossing a Staffordshire Bull Terrier and a Bullmastiff. The Bullmastiff is a dog who hails from England and was developed around the 1860’s. These dogs were originally a cross themselves between a Mastiff and a Bulldog. Gamekeepers were searching for a dog who could monitor game reserves and large estates as well as keep poachers away. At first, they tried the Mastiff but they were not aggressive enough and were also too slow. Next they tried the English Bulldog, but they were too aggressive and also too small. After crossing these two dogs, they found the perfect match. Bullmastiffs excelled at this job as they had the ability to silently track down and hold poachers without harming them. At the beginning of the 20th century, gamekeeping dogs were no longer needed, although there were staged competitions in which the Bullmastiff continued to dominate. Staffordshire Bull Terriers are also an English breed from centuries ago. At this time, bull-baiting and bear-baiting were common sports in Britain. Once these practices were banned in 1835, dog fighting took their place. To create dogs who would be skilled at this sport, Bulldogs were crossed with Black-and-Tan Terriers and the result was the Staffordshire Bull Terrier. Dog fighting was outlawed in England by the 1930s, although it is still practiced illegally underground. This breed made an appearance in the United States after the Second World War.

Staffy Bull Bullmastiff Breed Appearance

The Staffy Bull Bullmastiff is a solid and muscular dog breed that will be medium to large in size once it reaches maturity. The overall appearance of these dogs will be a mix between that of the Staffordshire Bull Terrier and the Bullmastiff. However, if you look closely enough you can see some characteristics from both of these breeds. The face, although it usually resembles the Bullmastiff, will be not quite as wrinkled. The Bullmastiff is a large dog with a broad and wrinkled head that has a short and dark muzzle and a slight underbite. Their ears are also dark and pendant, and the high set tails are tapering and reach down to the hock. Staffordshire Bull Terriers are sturdy and agile with a broad head and strong jaws that meet in a scissors bite. They have short muzzles, defined stops and distinct cheek muscles. Their eyes are round and dark and the noses are black. The ears can be either half pricked or rose shaped and the necks are short but thick and very muscular. These dogs have broad chests and level toplines. Your Staffy Bull Bullmastiff will be an attractive mix of the two, strong and majestic with a determined gait. One thing to note, his weight can vary to a large degree, depending on the parental mix.

Eye Color Possibilities
hazel Staffy Bull Bullmastiff eyes
Nose Color Possibilities
black Staffy Bull Bullmastiff nose
Coat Color Possibilities
brindle Staffy Bull Bullmastiff coat
white Staffy Bull Bullmastiff coat
black Staffy Bull Bullmastiff coat
fawn Staffy Bull Bullmastiff coat
red Staffy Bull Bullmastiff coat
Coat Length
Short Medium Long
Coat Density
Sparse Normal Dense
Coat Texture
Staffy Bull Bullmastiff straight coat texture
Straight Wiry Wavy Curly Corded

Staffy Bull Bullmastiff Breed Maintenance

The Staffordshire Bull Bullmastiff will adopt a coat that is similar to both of the parent dogs. The Staffordshire Bull Terrier has a short and sleek coat, whereas the Bullmastiff also has short but rough fur. Both breeds do not need very much grooming, although they do shed through the entirety of the year. Occasional grooming will help the fur look sleek and clean, as well as get your dog used to being handled. You also need to maintain your dog’s dental hygiene, which can be done by brushing their teeth at least two or three times per week. To prevent ear infections, Staffordshire Bull Bullmastiffs will need to have their ears cleaned once a week. Trimming your dog’s nails is also needed regularly. Although the exact frequency depends on the dog, you should check the length of their nails around once or twice a month. If you can hear your dog’s nails clicking on the floor when they walk, it is a good indication that they are too long and need to be trimmed.

Brushes for Staffy Bull Bullmastiff
Pin Brush
Nail Clipper
Brushing Frequency
Staffy Bull Bullmastiff requires weekly brushing
Daily Weekly Monthly

Staffy Bull Bullmastiff Temperament

Both parents of the Staffy Bull Bullmastiff, the Staffordshire Bull Terrier and the Bullmastiff, are very strong and powerful dogs. Because of this, their offspring will definitely need consistent training while they are growing up. The Bullmastiff is not known as an intelligent breed and can be quite independent and stubborn. However, these qualities should balance with the smart and eager to please personality of the Staffordshire Bull Terrier. The best way to teach these dogs is to be firm but kind, and to give them rewards when they perform well. Since both parent breeds can also be a bit aggressive, it is essential that they are taught to behave and to look at you for direction from a young age. Although these dogs are big and powerful, they are actually quite affectionate, loyal and gentle, making them great choices for families and children. They often consider themselves to be guardians of the house and will be kind and protective towards young kids. This breed does not like being left home alone for long periods of time and if they get bored and lonely, they may start chewing or become destructive.

Staffy Bull Bullmastiff Activity Requirements

The activity level of the Staffy Bull Bullmastiff will be somewhere in between those of the Staffordshire Bull Terrier and the Bullmastiff. The Staffordshire Bull Terrier is usually quite active, but since the Bullmastiff is more docile we can assume that the Staffy Bull Bullmastiff will have a bit less energy. Because of this, we can say that these dogs will most likely have a moderate energy level and should be exercised for around 25 to 45 minutes per day. Because they are not extremely energetic, these dogs can live well in an apartment as long as it is big enough for them. Do not exercise them too much in the heat, as they prefer the cold and do not handle warm temperatures very well.
Activity Level
Low Medium High
Rec. Walk Mileage Per Week
7 miles
Minutes of Activity Per Day
45 minutes

Staffy Bull Bullmastiff Food Consumption

Cups Per Day
3 cups
Daily Cost
$2.00 - $3.00
Monthly Cost
$80.00 - $90.00

Staffy Bull Bullmastiff Height & Weight

6 Months
Male Staffy Bull Bullmastiff size stats at six months
Height: 10 inches Weight: 45 lbs
Female Staffy Bull Bullmastiff size stats at six months
Height: 10 inches Weight: 39 lbs
12 Months
Male Staffy Bull Bullmastiff size stats at 12 months
Height: 13 inches Weight: 58 lbs
Female Staffy Bull Bullmastiff size stats at 12 months
Height: 13 inches Weight: 52 lbs
18 Months
Male Staffy Bull Bullmastiff size stats at 18 months
Height: 17 inches Weight: 70 lbs
Female Staffy Bull Bullmastiff size stats at 18 months
Height: 17 inches Weight: 64 lbs

Staffy Bull Bullmastiff Owner Experiences

Stanley Blue Seville
9 Months
2 People
House & Yard
Chasing his toy
Tug of war
Chasing feet
He’s a fun energised and very affectionate. He loves to play with us and be around people. He’s brilliant when he walks and he’s very laid back and lazy.
58 seconds ago
8 Months
4 People
House & Yard
He's very curious if new people but loves his family and good with children
1 week, 1 day ago
8 Weeks
1 People
I havs just recently bought my little girl and shes a dream
2 weeks, 1 day ago
9 Months
1 People
Very jumpy and always want loving
1 month, 2 weeks ago
4 Years
1 People
House & Yard
She is the best dog i have ever had
2 months, 1 week ago
Book me a walkiee?
Sketch of smiling australian shepherd