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Bullmastiff Dog Breed Profile

Other Names
Dog Group Kennel Club
Breed Classification
The Bullmastiff is a member of the working group in America and Britain, however in Australia it is classified as a utility dog. They were originally used as guard dogs and today they are used as guards and as companions. 
Cost of Ownership
Average Food Cost
per week
Feeding Requirements
The Bullmastiff can be quite demanding in its feeding requirements. As a breed they are reputed to have individual feeding needs. As adults they should be fed twice daily, the breeder will recommend a suitable feeding programme for your dog. 
Other Expenses
A puppy will cost in the region of £800 - £1000. 
9 - 15 years
These dogs live to about 10 years of age. Cancer and bloat being the main causes of death. 
Average Litter Size
Litters can vary from 4 to 13 puppies; the average, however is 8. 
General Physical Description
The Bullmastiff is a powerfully built dog They have large square heads with large muscular necks A compact dog that is muscular all over and naturally large Their coats are short hard and weather proof

Height Min Max
Bitch 61cm (24") 66cm (26")
Dog 64cm (25") 68cm (27")
Weight Min Max
Bitch 41kg (90lbs) 50kg (110lbs)
Dog 50kg (110lbs) 59kg (130lbs)
Size Category
Weight Height Range
Dogs measure 63.5-68.5cms at the withers and weigh between 50-59kgs. Bitches measure 61-66cms and weigh between 41-50kgs. It is a good idea to remember that when you decide on this dog that it does grow up to be a large, heavy dog. 
The breed is affected by cancer and bloat. Hip dysplasia and temperaments are a concern for breeders but screening can be carried out on the breeders lines. The Bullmastiff is also prone to skin and eye problems. There does appear to be a hereditary back problem that occurs to various degrees. 
Common Ailments

Eczema, Dermatitis, Alopecia, Muzzle pyoderma
Cerfical malformation, tumours, kidney stones  
Susceptibility To Illness
The Bullmastiff was originally called the 'Gamekeeperís Night Dog' as they were used to catch poachers. The base stock of the Bullmastiff was 60% English Mastiff and 40% Bulldog. They were created in the late 1800ís. When the need for gamekeepers and the Bullmastiff declined they were used in sport. Someone would run off into the undergrowth and after a short time a muzzled Bullmastiff would be released to see if the person could be found. They were not trained to maul or kill, but to overpower their target. All the records state the dog never lost. The Kennel Club in Britain first recognised the breed in 1925, and the American Kennel Club gave them recognition in 1933. 
The Bullmastiff can be stubborn and firm handling is required from puppyhood. They can also be quite headstrong and boisterous, especially during adolescence.< 
Show Characteristics
The Bullmastiff has a very distinctive head that should appear large and square. They have a short muzzle with a broad nose and wide nostrils. The mouth should be level, being slightly undershot is allowed. The eyes should be dark or hazel in colour and of medium size. The ears are V shaped and small, they are also darker than the body. The neck is very thick and muscular, it is almost equal to the circumference of the skull. The chest should be wide and deep, the shoulders muscular and powerful. The topline should be level with a short and straight back. The feet should be well arched with rounded toes. The tail should be high set and carried straight or curved. The colours desired are fawn, red or brindle. A small amount of white is allowed on the chest but nowhere else, the muzzle should be black. 
Country Of Origin
Famous Examples
Records Held
Overall Exercise
40 - 60 minutes per day.
This dog should not have long walks or be allowed a lot of free exercise until it is at least 12 months old. It has to be remembered that even when this dog is 6 months old, and is relatively large, it is still a puppy. Too much exercise too young can lead to bone and joint related health problems in later life. They have an average demand for exercise, only requiring a few walks per day. They do enjoy exercise and games with the family. 
Distress if Left Alone
Personal Protection
Guard Dog Suitability
Risk of Sheep Worrying
Tendency to Bark
Level of Aggression
Compatibility With Other Animals
Suitable For Children


General Character And Temperament
These dogs are very protective of their family and other household pets. They have to be socialised from an early age. The Bullmastiff will only accept strangers if they are introduced to them by someone they trust. Intruders will be quickly halted in their tracks. It is not really a breed for the novice owner, due to its strength, stubborn and over protective nature. 
Coat Length
Grooming Requirement
< Once a week 
Requires Professional Groomer
Grooming the Bullmastiff is relatively easy, a grooming mitt is all that is required to remove any dead and loose hair. 
The Bullmastiff can be fawn, red or brindle, some may have limited white on the chest. 
Suffers From Allergies

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