Last Updated: 09/03/2026
Bullmastiff Breed Guide
Thinking of a Bullmastiff? Our breed guide covers facts, health, and care.
Author: Dr Maree Monaghan BVSc (Hons)
Reading Time: 5 minutes - short read
The Bullmastiff is a massive, powerful dog originally bred to guard English estates from poachers. Despite their imposing appearance, they are known for being gentle, quiet, and devoted family companions that require moderate exercise and early socialisation to thrive.
All about Bullmastiffs
Place of origin
UK
Weight range
41-59kg
Breed size
Giant
Height range
61-69cm
Breed group
Utility
Life expectancy
8-10 years
Coat colours
Red, Fawn, Brindle
Grooming needs
Low
Coat type
Short/Smooth
Health issues
Bloat; Hip Dysplasia; Cancer
Shedding factor
Low/Mod
Exercise needs
Moderate
Play style
Gentle
Housing needs
Yard Required
Trainability
Moderate
Social needs
Moderate
Family suitability
High
Tendency to bark
Low
Nutrition
Selecting a high-quality diet is vital for the Bullmastiff to support their heavy bone structure and maintain a healthy body condition. Correct nutrition helps to mitigate the risks of joint stress and developmental issues often seen in large breeds.
Best food for adult Bullmastiffs
Adult Bullmastiffs require a diet specifically formulated for large breeds to ensure they receive the correct balance of nutrients for their size. These diets often contain controlled calorie levels to prevent obesity, which can place significant strain on their joints. Look for formulas enriched with glucosamine, chondroitin, and omega-3 fatty acids to support long-term mobility and cartilage health.
Given their risk of bloat, it is also beneficial to choose a large kibble size to encourage chewing and slow down ingestion of food. Feed multiple smaller meals rather than one large meal, and avoid exercise within 1 hour of feeding.
As a breed predisposed to joint issues such as hip dysplasia, elbow dysplasia and osteoarthritis, feeding a diet with added beneficial ingredients such as glucosamine, chondroitin, green lipped mussel powder and fish oil can help to support joint health and promote better mobility.
What to look for
Large breed-specific kibble to provide the correct nutrient density for a high body mass.
Added glucosamine and chondroitin to support the heavy load placed on the joints.
High-quality, easily digestible proteins to help maintain lean muscle mass without excessive weight gain.
Best food for Bullmastiff puppies
Bullmastiff puppies experience a period of rapid growth that must be carefully managed to prevent skeletal deformities. A large breed puppy formula is essential as it contains a specific calcium-to-phosphorus ratio designed for slow and steady bone development. These diets provide the necessary energy for growth while ensuring the puppy does not gain weight too quickly, which can lead to early-onset joint issues. Providing a diet rich in DHA is also important for healthy brain and vision development during their formative months.
What to look for
Controlled calcium and phosphorus levels to support healthy and stable bone development.
Precise calorie content to ensure a steady growth rate rather than rapid weight gain.
Inclusion of DHA to assist with cognitive development and training receptivity.
Flea & worming
Routine flea, tick, and worming treatments are necessary to protect Bullmastiffs from uncomfortable infestations and dangerous internal parasites. Consistency in these preventative measures ensures the dog remains healthy and avoids secondary issues like skin irritation or anaemia.
Best flea and worming treatments for Bullmastiffs
When choosing a flea and worming product for a Bullmastiff, it is important to select a treatment that covers their specific weight range, as they quickly exceed the limits of standard products. Oral chewable tablets are often a convenient choice for these large dogs, providing broad-spectrum protection against fleas, ticks, heartworm, and intestinal worms in one dose. Monthly administration is the most common schedule, helping owners stay on top of their pet's health requirements. Always verify the weight of the dog before administration to ensure they receive an effective dose.
What to look for
Easy-to-administer oral or topical formats that suit the owner's lifestyle and the dog's preference.
Broad-spectrum protection that includes heartworm and intestinal worm prevention.
Weight-appropriate dosing that covers the 40-60kg range commonly seen in this breed.
Health
Using the right health products can significantly improve the quality of life for a Bullmastiff by supporting their specific physiological needs. Targeted supplements and care products help address breed-related predispositions before they become clinical issues.
Products to keep Bullmastiffs healthy
Joint supplements are a primary recommendation for Bullmastiffs to help protect their cartilage and reduce inflammation in their large frames. Products containing green-lipped mussel, MSM, and glucosamine can be started early in life to provide a foundation for healthy mobility as they age.
Dental care products like enzymatic toothpastes or water additives are helpful for maintaining oral hygiene and preventing periodontal disease.
Slow feeder bowls and puzzle feeders are ideal to slow the rate of ingestion of food and reduce the risk of bloat.
What to look for
Joint support supplements with high concentrations of active ingredients like glucosamine and chondroitin.
Dental hygiene aids to reduce plaque and tartar buildup in a large mouth.
Slow feeders and puzzle toys to slow the rate of ingestion of food and reduce the risk of bloat.
Training and activity
Choosing the right toys and walking products is essential for the Bullmastiff to ensure they are mentally stimulated and physically controlled during exercise. Proper equipment makes training more effective and keeps both the owner and the dog safe.
Best toys for Bullmastiffs
Bullmastiffs have very powerful jaws and require toys made from heavy-duty materials to prevent them from being destroyed within minutes. Tough rubber chew toys and durable fetch items are excellent for engaging their natural instincts while providing a safe outlet for chewing.
Interactive puzzle toys can also be beneficial, as they provide mental stimulation and help prevent boredom in a breed that is often quite smart. It is important to avoid small toys that could pose a choking hazard for a dog with such a large mouth.
What to look for
Large sizing to ensure the toy cannot be swallowed or stuck in the throat.
Mental enrichment features like treat-stuffing capabilities to keep the dog occupied for longer periods.
Extreme durability ratings to withstand the bite strength of a powerful guardian breed.
Best harnesses, collars and walking accessories for Bullmastiffs
A sturdy harness is generally recommended for walking a Bullmastiff, as it provides better control and distributes pressure more evenly across their chest than a standard collar. Front-attaching harnesses can be particularly useful for managing pulling, which is important given the dog's immense strength. Leads should be made from high-tensile materials with heavy-duty clips to ensure they do not snap under sudden tension. Early training with these tools helps establish good walking manners before the dog reaches its full adult size.
What to look for
Control features like traffic handles that allow for close restraint in busy or high-distraction environments.
Multi-point adjustable harnesses that can accommodate the broad chest and thick neck of the breed.
Heavy-duty leads with reinforced stitching to handle the physical weight and power of the dog.
Grooming
Selecting appropriate grooming products for the Bullmastiff's short coat makes maintenance simple and keeps their skin in top condition. Even low-shedding breeds benefit from regular grooming to remove loose hair and distribute natural oils.
Best grooming products for Bullmastiff
The short, dense coat of the Bullmastiff is relatively easy to care for but does require regular brushing with a rubber curry comb or soft bristle brush. This helps to manage shedding and keeps the coat looking shiny and healthy. During the shedding seasons, more frequent brushing may be required to keep hair off the furniture and floor. Mild, hypoallergenic shampoos are ideal for bathing, as they clean the skin without stripping away essential oils or causing irritation.
What to look for
Rubber curry brushes that effectively remove dead hair while providing a gentle massage to the skin.
Sturdy nail clippers or grinders to maintain the large, thick nails characteristic of the breed.
Gentle shampoos formulated for sensitive skin to prevent dryness or itching after a bath.
Sleep and home
Providing the correct sleep and home products ensures the Bullmastiff has a supportive environment that protects their joints and respects their large size. A comfortable resting area is crucial for a breed that spends a significant portion of its day sleeping.
Best beds for Bullmastiffs
An orthopaedic bed is the best choice for a Bullmastiff to provide the necessary support for their heavy joints and bones. These beds are typically made from memory foam that contours to the dog's body, reducing pressure points and helping to prevent the development of hygromas. It is important to choose a bed that is large enough for the dog to stretch out fully, as a cramped sleeping space can lead to discomfort. Durable, washable covers are also a practical feature for managing the drool and dirt that may be brought into the house.
What to look for
High-density memory foam to provide orthopaedic support for a heavy-weight dog.
Removable and machine-washable covers for easy cleaning and maintaining a hygienic home.
Generous dimensions that allow the dog to sprawl out comfortably without hanging off the edge.
Bullmastiff FAQ
