Bullmastiff vs Saint Bernard
A side-by-side comparison to help you find the right breed for your lifestyle.
Bullmastiff
The Bullmastiff is a large, powerful, and loyal breed known for its protective nature and gentle temperament. Originally bred in England as a gamekeeper's companion to guard estates, this breed combines the strength of a Mastiff with the agility of a Bulldog.
Extra Large
Medium
7-9 years yrs
N/A
Saint Bernard
The Saint Bernard is a large, gentle dog breed known for its impressive size, friendly demeanor, and history as a rescue dog in the Swiss Alps. Renowned for their loyalty and affectionate nature, these dogs make excellent family companions and are easily recognizable by their distinctive, expressive faces and thick, warm coats.
Extra Large
Medium
8-10 yrs
N/A
Quick Comparison
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Energy | ||
| Trainability | ||
| Grooming Needs | ||
| Family Friendly | ||
| Independence |
Key Characteristics
| Good with Kids | ||
| Good with Dogs | ||
| Good with Cats | ||
| Hypoallergenic | ||
| Apartment Friendly | ||
| First-Time Owner OK |
| Detail | Bullmastiff | Saint Bernard |
|---|---|---|
| Size | Extra Large | Extra Large |
| Energy Level | Medium | Medium |
| Grooming | Medium | High |
| Trainability | challenging | challenging |
| Barking Level | Low | High |
| Shedding Level | Medium | High |
| Chew strength | Hard | Hard |
| Housing | Yard | Yard |
Owner Fit & Decision Guide
Owner Match
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Experience Level | Experienced | Experienced |
| First-Time Owner | ||
| Ideal Owner | Active individual or family who can provide adequate exercise and training for a Bullmastiff. | Active individual or family who can provide adequate exercise and training for a Saint Bernard. |
Bullmastiff Dealbreakers
- Cannot meet 60-60 min daily exercise
- Cannot commit to grooming needs
Saint Bernard Dealbreakers
- Cannot meet 30-60 min daily exercise
- Cannot tolerate heavy shedding
Surrender Risk
| Factor | Bullmastiff | Saint Bernard |
|---|---|---|
| Risk Level | Medium | Medium |
| Primary Reasons | Underestimated exercise needs, Behavioral challenges, Cost of care | Underestimated exercise needs, Behavioral challenges, Cost of care |
Temperament & Personality
Behavior Comparison
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Prey Drive | ||
| Watchdog Ability | ||
| Stranger Friendly | ||
| Drool Level | ||
| Wanderlust |
Vocalization
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Barking Level | Low | High |
| Howling Tendency | ||
| Whining Tendency | Low | Low |
| Separation Vocalization |
Safety & Reliability
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Escape Artist | ||
| Dog Park Suitable | ||
| Off-Leash Reliable | ||
| Small Animal Safe | ||
| Leash Reactivity | ||
| Resource Guarding Risk | Low | Low |
Bullmastiff Social Traits
Moderate
Selective
Saint Bernard Social Traits
Moderate
Generally friendly
Training
Bullmastiff
- ** Positive reinforcement is the only viable path. Harsh corrections often cause this breed to shut down or become defensive.
Saint Bernard
- ** Positive reinforcement is mandatory. They are sensitive souls; harsh corrections will cause them to shut down or become fearful.
Bullmastiff Considerations
This is a genetically rooted trait in many Bullmastiffs. While they may coexist peacefully with dogs of the opposite sex, placing two males or two females together often results in severe conflict once they reach social maturity (18–24 months). This aggression is rarely "cured" through training; it is managed.
Bred to track and hold poachers silently without human direction, the Bullmastiff is an independent problem solver. They do not have the "will to please" of a Golden Retriever. If a command does not make sense to them, they will simply ignore it. This is often misinterpreted as stupidity; it is actually a refusal to perform rote tasks without high-value motivation.
While independent in thought, they are physically clingy. They will lean their 120-pound bodies against you, sit on your feet, and follow you from room to room. This constant physical presence can be overwhelming for owners who value personal space.
Saint Bernard Considerations
Despite their size, Saints are profoundly needy. They do not tolerate isolation well and can develop destructive separation anxiety. A 160lb dog with anxiety can destroy drywall, doors, and furniture in minutes.
While benevolent, they are not blindly obedient like a Golden Retriever. They possess a slow-burning stubbornness; if a Saint Bernard decides not to move, you cannot physically force them. This requires patience and psychological motivation rather than physical correction.
Between 8 and 24 months, they are essentially giant, clumsy puppies. They can unintentionally knock over children, grandparents, and furniture. Leash manners must be solidified before they reach full weight, or they will become dangerous to walk.
Multi-Species Compatibility
| Species | Bullmastiff | Saint Bernard |
|---|---|---|
| With Cats | Generally safe with proper introduction | Generally safe with proper introduction |
| Small Mammals | Supervision required | Supervision required |
| Birds / Reptiles | Caution advised | Caution advised |
Advanced Behavior
| Trait | Bullmastiff | Saint Bernard |
|---|---|---|
| Predatory Sequence Risk | Medium | Medium |
| Biddability | Low | Low |
| Noise Sensitivity | Low | Low |
| Territorial Barking | ||
| Same-Sex Aggression Onset | 18 months | 18 months |
First Year & Life Stages
First Year Challenges
| Challenge | Bullmastiff | Saint Bernard |
|---|---|---|
| Puppy Difficulty | ||
| Destructive Phase | 6-18 | 6-18 |
| House Training | Moderate | Challenging |
| Crate Training | Medium | Medium |
| Adolescent Regression |
Bullmastiff: Bullmastiff puppies require consistent training and patience.
Saint Bernard: Saint Bernard puppies require consistent training and patience.
Life Stages Timeline
| Stage | Bullmastiff | Saint Bernard |
|---|---|---|
| Puppy Phase | 12 months | 12 months |
| Adolescence | 6-18 | 6-18 |
| Adult Years | 2-8 | 2-8 |
| Senior Onset | ~8 years | ~8 years |
| Peak Energy Age | 1-3 years | 1-3 years |
Size & Physical Characteristics
Physical Stats
| Measurement | Bullmastiff | Saint Bernard |
|---|---|---|
| Height | N/A | N/A |
| Weight | Not enough data yet | Not enough data yet |
| Size Category | Extra Large | Extra Large |
| Lifespan | 7–9 years | 8–10 years |
| Litter Size | 4-8 | 4-8 |
Bullmastiff Coat
Saint Bernard Coat
Lineage & Origin
| Detail | Bullmastiff | Saint Bernard |
|---|---|---|
| Original Purpose | Developed in mid-19th century England, the Bullmastiff was created by gamekeepers to combat poachers | The Saint Bernard was developed by monks at the Great St |
| Origin | N/A | N/A |
Breeding Details
| Detail | Bullmastiff | Saint Bernard |
|---|---|---|
| C-Section Rate | Varies | Varies |
| Whelping Difficulty | Medium | Medium |
| Puppy Mortality Rate | Low | Low |
Physical Risks
| Risk | Bullmastiff | Saint Bernard |
|---|---|---|
| Bloat / GDV Risk | Low | Low |
| Slippery Floor Risk | Low | Low |
| Min Fence Height | 1.5m | 1.5m |
| Dig / Escape Risk | Low | Low |
Health & Common Conditions
Bullmastiff Health Issues
Saint Bernard Health Issues
Bullmastiff Suggested Tests
- OFA/PennHIP for hip/elbow dysplasia
- Echocardiogram for cardiac issues
- CERF for eye conditions
- Prophylactic gastropexy
Saint Bernard Suggested Tests
- OFA/PennHIP certifications for hips and elbows
- Ophthalmologist clearances for eyes
- Cardiac exams for heart health
Health Risk Overview
| Risk Factor | Bullmastiff | Saint Bernard |
|---|---|---|
| Cancer Risk | Medium | Medium |
| Cardiac Risk | Low | Low |
| Neurological Risk | Low | Low |
| CCL/ACL Tear Risk | Low | Low |
| Vet Burden Tier | Medium | Medium |
Sensitivities & Allergies
| Sensitivity | Bullmastiff | Saint Bernard |
|---|---|---|
| Skin Allergies | ||
| Environmental Allergies | ||
| Stomach Sensitivity | Low | Low |
| Food Allergies |
Health Maintenance
| Care Item | Bullmastiff | Saint Bernard |
|---|---|---|
| Nail Growth Rate | Normal | Normal |
| Eye Care Needs | Low | Low |
| Anal Gland Issues | Occasional | Occasional |
Senior Care & Aging
Bullmastiff Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Saint Bernard Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Grooming & Care
Bullmastiff
medium maintenanceSaint Bernard
high maintenanceLifestyle Compatibility
Bullmastiff Daily Life
Saint Bernard Daily Life
Housing & Legal Restrictions
| Restriction | Bullmastiff | Saint Bernard |
|---|---|---|
| BSL Restricted | ||
| Common Rental Ban | ||
| Insurance Blacklist | ||
| Weight Category | Under 50lbs | Under 50lbs |
Climate Tolerance
| Climate | Bullmastiff | Saint Bernard |
|---|---|---|
| Heat Tolerance | ||
| Cold Tolerance | ||
| Water Affinity | Medium | Medium |
Travel Compatibility
| Activity | Bullmastiff | Saint Bernard |
|---|---|---|
| Car Travel | Good | Good |
| Camping | ||
| Beach Friendly | ||
| Hiking Rating | ||
| Cabin Flight Eligible | ||
| Hotel Friendly Size |
Niche Suitability
| Role | Bullmastiff | Saint Bernard |
|---|---|---|
| Service Dog | Low | Low |
| Therapy Dog | Low | Low |
| Deep Pressure Therapy | ||
| Canicross / Bikejoring | ||
| Apartment Adaptable | ||
| Tactile / Sensory Friendly | ||
| Livestock Guardian | ||
| Medical Alert | Low | Low |
Costs & Expenses
Upfront Costs
| Cost | Bullmastiff | Saint Bernard |
|---|---|---|
| Purchase Price | N/A | N/A |
| Initial Cost Range | $1,000–$2,500 | $1,000–$2,500 |
| Cost Tier |
Ongoing Costs
| Cost | Bullmastiff | Saint Bernard |
|---|---|---|
| Monthly Range | $180–$300 | $180–$330 |
| Yearly Range | $2,160–$3,600 | $2,160–$3,960 |
| Food / Month | $100-150 | $100-180 |
| Insurance / Month | $80-150 | $80-150 |
| Grooming / Session | N/A | N/A |
| Vet Routine / Year | $500-800 | $500-800 |
| Monthly Cost Tier |
Bullmastiff Lifetime Cost
N/A
Saint Bernard Lifetime Cost
N/A
Quirks & Fun Facts
Daily Quirks
| Quirk | Bullmastiff | Saint Bernard |
|---|---|---|
| Snoring | ||
| Flatulence | Occasional | Occasional |
| Slobber Level | Low | Low |
| Smell When Wet | Moderate | Moderate |
| Zoomies Frequency | Occasional | Occasional |
| Counter Surfing | ||
| Digging Tendency | Low | Low |
Frequently Asked Questions
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