The English Mastiff and Bullmastiff are often mistaken for each other due to their similar build—massive size, broad shoulders, short muzzles, and strong, muscular frames. Many simply refer to them as “Mastiffs,” but these two breeds have distinct traits.
Despite their imposing appearance and undeserved reputation for aggression, both breeds are loyal, protective, and affectionate. This guide explores their differences in appearance, temperament, and suitability as pets, helping you decide which breed is the best fit for your lifestyle.
Quick Comparison: Bullmastiff vs English Mastiff
| Trait | Bullmastiff | English Mastiff |
| Breed Purpose | Guarding dog, family companion dog | Guarding dog, family companion dog |
| Size | Medium to large | Very large |
| Height | 24 to 27 inches (61 to 69 cm) | 27 to 30 inches (69 to 76 cm) |
| Weight | 100 to 130 pounds (45 to 59 kg) | 120 to 230 pounds (54 to 104 kg) |
| Lifespan | 8 to 10 years | 6 to 10 years |
| Coat Type | Short, dense, and low-maintenance | Short, smooth, requiring moderate grooming |
| Temperament | Alert, protective, yet gentle and affectionate | Calm, dignified, and deeply loyal |
| Energy Level | Moderate | Low to moderate |
| Exercise Needs | Enjoys daily walks and active play | Prefers to leisurely activities and quiet companionship |
| Trainability | Intelligent but may be independent; benefits from firm, consistent training | Eager to please but can be stubborn; thrives with gentle, steady guidance |
| Average Price | Varies | Varies |
| Best For | Families seeking a vigilant yet friendly guardian | Owners desiring a noble, gentle giant who serves as a devoted family companion |
Introducing the Bullmastiff
The Bullmastiff is a medium-to-large breed renowned for its solid, muscular frame and alert disposition. Originally developed in the 19th century in England by crossing Old English Bulldogs with Mastiffs, Bullmastiffs were bred to guard estates and deter intruders. They combine strength with agility, making them excellent guardians who remain gentle and affectionate with their families. Their short, dense coat is easy to care for, and their expressive eyes reveal both determination and warmth.
Introducing the English Mastiff
The English Mastiff is one of the largest dog breeds in the world, known for its imposing size and calm, dignified nature. With roots that trace back to ancient times, English Mastiffs have long been cherished as both protectors and family companions. Their massive build, broad chest, and robust frame command respect, yet they are remarkably gentle and patient with loved ones. Despite their size, these dogs adapt well to a home environment where they can relax alongside their family. Their short, smooth coat and noble expression contribute to an appearance that is both impressive and endearing.
Origins and Breed Background
The origins of the Bullmastiff and the English Mastiff provide fascinating insight into their unique characteristics. The Bullmastiff was developed in the mid-1800s in England by combining the athleticism of the Old English Bulldog with the power of the Mastiff, resulting in a breed that could efficiently guard property without being overly aggressive.
In contrast, the English Mastiff boasts an ancient lineage, with ancestors believed to have served as war dogs and guardians in medieval times. Selective breeding over generations refined their traits, focusing on size, strength, and a calm demeanor. These historical roots explain why Bullmastiffs tend to be agile and alert, while English Mastiffs possess a more imposing yet tranquil presence.
To learn more about these majestic breeds and other similar types, check out this guide on Types of Mastiff Breeds.
Distinctive Physical Characteristics
Bullmastiffs are characterized by their muscular, agile build and a strong, broad head that reflects their guarding heritage. Their ears are set high, and their eyes express a mix of vigilance and warmth.
In contrast, English Mastiffs are distinguished by their enormous, robust frame and imposing stature. Their massive chests and broad faces give them a commanding presence, while their short coats and gentle eyes reveal a surprisingly tender nature.
Although both breeds sport low-maintenance coats, the stark difference in size and build significantly influences their overall appearance and the way they move through their environment.
Temperament and Daily Life
In daily life, Bullmastiffs are known for their balanced nature. They are vigilant and protective, making them excellent guard dogs, yet they remain loving and playful with their family members. Their moderate energy levels mean they enjoy regular walks and playtime without requiring exhaustive exercise.
English Mastiffs, on the other hand, are famous for their calm and laid-back demeanor. They tend to be more sedentary, preferring to lounge and enjoy quiet moments with their loved ones. Both breeds thrive in homes where early socialization and consistent, gentle training are prioritized, ensuring that their protective instincts are balanced with affection and good manners.
Training, Exercise, and Health Considerations
Training for both Bullmastiffs and English Mastiffs requires patience, consistency, and positive reinforcement. Bullmastiffs, with their alert intelligence, respond well to structured training sessions that provide clear guidelines and firm, yet kind, guidance. They enjoy moderate physical activities such as daily walks and interactive play, which help keep them mentally stimulated.
English Mastiffs benefit from a calm training approach that respects their massive size and sometimes stubborn nature; short, leisurely walks and gentle play are often sufficient to keep them fit.
For effective training techniques, check out the Best Dog Training Methods to help you get the best results with your Bullmastiff or English Mastiff.
Health-wise, both breeds require regular veterinary check-ups, a balanced diet, and careful weight management to prevent joint issues and other health concerns common in large dogs.
Choosing Your Gentle Giant
When deciding between a Bullmastiff and an English Mastiff, consider your living environment, lifestyle, and the type of guardian you desire. If you seek an agile, vigilant companion with moderate energy levels and a friendly, protective nature, the Bullmastiff might be your ideal match.
Conversely, if you prefer a more imposing, yet calm and affectionate presence that exudes ancient nobility, the English Mastiff could be the perfect addition to your family. Both breeds offer remarkable loyalty, a protective instinct, and the potential to form deep bonds with their owners.
Reflect on your daily routine, exercise opportunities, and the level of training you can provide, and you’ll soon discover which gentle giant will be your lifelong companion.