The Bullmastiff is a powerful, devoted guardian breed, developed in 19th-century England by crossing the Mastiff with the Bulldog to create the "gamekeeper's night dog," a dog fast and strong enough to track down and pin poachers without mauling them. That history produced a calm, confident, intensely loyal protector: large and imposing, naturally watchful of strangers, and deeply bonded to its family. The Bullmastiff is a gentle, affectionate companion at home and a serious deterrent to intruders, and it demands an owner who understands what owning a powerful guardian involves.
The defining factors in training a Bullmastiff are its size, its guardian nature, and its stubborn streak. The breed is intelligent and more biddable than some mastiffs, but it grows enormous, so anything you allow in a puppy becomes a serious matter in a 110-plus-pound adult, and it is naturally protective and a touch independent. It is also sensitive, so harsh handling backfires. Install manners early while the dog is manageable, socialize heavily to keep the guarding instinct sound, lead with calm consistency, and you get a magnificent, devoted, well-mannered guardian. Skip the early work, and you get an enormous, stubborn, suspicious dog you cannot manage. This is not a first dog.
This guide covers what works with a Bullmastiff, week by week, built around how a powerful, guarding, stubborn breed actually learns.
What Makes Training a Bullmastiff Different
Four breed traits shape your approach.
1. Size makes manners urgent. A behavior that is cute in a puppy, like jumping up or leaning, is dangerous in a 110-plus-pound adult. You have a short window to install polite greetings, loose-leash walking, and impulse control while the dog is manageable. This urgency is the breed's central training challenge.
2. A guardian temperament. The Bullmastiff is naturally watchful of strangers and protective of family and territory. Heavy, early, ongoing socialization is essential to shape that instinct into sound judgment rather than reactivity, especially given the dog's size and power.
3. Stubborn and a touch independent. As a guardian bred to make its own decisions, the Bullmastiff weighs your requests and has its own opinions. It cooperates for calm, patient, genuinely rewarding training and an owner it respects, and it resists drilling and pressure.
4. Sensitive, low-energy, and care-intensive. Despite its power, the Bullmastiff is sensitive and shuts down under harshness. It is relatively low-energy and calm, but its slow-growing joints need protecting, it drools, and the brachycephalic-leaning face means heat must be managed.
Week-by-Week Training Plan for Your Bullmastiff
Below is the framework we use at TailorPup for a Bullmastiff-specific 12-week plan, written for a committed owner. Run it at home; the order and emphasis are the point.
Weeks 1 and 2 : Foundation and Intensive Socialization
Socialization leads with this guardian breed. Expose the puppy calmly and positively to many people, places, sounds, and well-controlled dogs while it is still small. Build engagement with high-value rewards in three to four short daily sessions, and begin gentle handling for grooming and care.
Weeks 3 and 4 : Core Commands and Impulse Control
Lure sit and down, mark, reward, and add cues once reliable, expecting a stubborn but biddable learner. Start impulse-control work, wait at doors and calm settling, which matters enormously in a future giant. Keep sessions short, patient, and end on a win.
Weeks 5 and 6 : Leash Work (While It Is Possible)
This is critical with a future 110-plus-pound dog. Teach loose-leash walking now, while you can still physically manage the puppy. Use stop-and-stand for pulling and a front-clip harness, and practice daily so the behavior is solid before the dog reaches full size, keeping exercise low-impact to protect growing joints.
Weeks 7 and 8 : Recall, Greetings, and Counter-Conditioning
Build recall with rewards on a long line, aiming for reliable control. Work hard on calm greetings, since a leaning or jumping Bullmastiff is overwhelming at full size, and begin counter-conditioning to strangers so the guarding instinct stays discerning. Our reactivity guide lays out the method.
Weeks 9 and 10 : Settling, Management, and Care
Teach a solid settle behavior so the dog has a calm default around visitors, and establish clear household rules for guests. Keep up gentle exercise and care, manage the dog carefully in heat, and keep socializing throughout, since guardian breeds need it lifelong.
Weeks 11 and 12 : Generalization
Work on manners and calm in more distracting settings, controlled responses to strangers, and reliable leash behavior. The goal is a stable, well-mannered, controllable guardian that is safe and predictable in real life, not a precision obedience dog.
Common Bullmastiff Training Mistakes
Three mistakes show up repeatedly with this breed.
Mistake 1 : Delaying manners because the puppy is calm. The window to teach leash and greeting manners while the dog is small closes fast. Owners who wait end up with an enormous dog that never learned the rules. Start early and stay consistent.
Mistake 2 : Under-socializing the guardian instinct. This is the dangerous one. Without heavy, early, ongoing socialization, the Bullmastiff's protectiveness becomes indiscriminate suspicion, a serious matter in a dog this size. Socialization is not optional.
Mistake 3 : Trying to force a stubborn, sensitive dog. Confrontation and harsh handling make a Bullmastiff dig in and damage trust. Use calm, patient, reward-based methods and realistic expectations. The full list is in our Bullmastiff training mistakes guide.
Frequently Asked Questions
Are Bullmastiffs easy to train ? Moderately, with patience. They are intelligent and more biddable than some mastiffs, so reward-based training works, but they are stubborn, independent, and protective. Early manners are essential given the size, and force backfires.
Are Bullmastiffs good for first-time owners ? Generally not. The size, strength, guarding instinct, and stubborn streak suit owners with some experience who can commit to early socialization, manners, and calm leadership.
How much exercise does a Bullmastiff need ? Relatively little: moderate daily walks, kept low-impact while the dog is growing to protect the joints and gentle overall given heat sensitivity. The breed is calm and low-energy but still needs daily engagement and socialization.
Why is my Bullmastiff protective ? Because it was bred as a guardian, so watchfulness toward strangers is instinct. Thorough, positive socialization shapes it into sound judgment, letting the dog tell a guest from a real threat. Channel it through training rather than encouraging it.
Do Bullmastiffs drool a lot ? Yes, the breed drools, along with needing care for its facial folds. These are part of owning the breed, and building handling tolerance early makes grooming and care easier.
Is positive reinforcement effective for Bullmastiffs ? Yes, paired with calm, patient leadership. The sensitive, stubborn breed responds to reward-based training and resents harsh handling, which damages trust and deepens the stubbornness.
Are Bullmastiffs good family dogs ? Yes, for committed families. They are devoted, gentle, and affectionate with their people, including children, but their size and protectiveness mean early socialization, manners, and supervision are essential.
Why TailorPup Was Built for Bullmastiffs
A generic plan ignores what defines this breed: the size that makes early manners non-negotiable, the guarding instinct, the stubbornness, and the sensitivity. That mismatch is genuinely risky with a dog this powerful.
TailorPup builds a 12-week plan around your specific dog: its guardian nature, its age, and the realities of living with it. For a Bullmastiff that means front-loaded intensive socialization, early manners and leash work while the dog is small, calm patient reward-based leadership, counter-conditioning, and a heavy emphasis on management.
Daily 12-minute sessions plus weekly adjustments based on your dog's progress. Free for 7 days, no card required.
Start your Bullmastiff's plan free at tailorpup.com →
Related: Bullmastiff Training Mistakes · Recall Training · Reactivity Training · Leash Pulling