Bullmastiff vs Rottweiler
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
Rottweiler
Also known as: Treibhund, Metzgerhund
The Rottweiler is a robust and powerful dog breed known for its strength, loyalty, and protective nature, often used as a working dog in roles such as guarding and herding. With a confident and calm demeanor, Rottweilers are also affectionate companions, requiring proper training and socialization to thrive in family environments.
Large
High
8 - 10 yrs
56 - 68 cm
Quick Comparison
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| 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 | Rottweiler |
|---|---|---|
| Size | Extra Large | Large |
| Energy Level | Medium | High |
| Grooming | Medium | Low |
| Trainability | Challenging | Easy |
| Barking Level | Low | Low |
| Shedding Level | Medium | High |
| Chew strength | Hard | Hard |
| Housing | Yard | Yard |
Owner Fit & Decision Guide
Owner Match
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| Experience Level | Experienced | Experienced |
| First-Time Owner | ||
| Ideal Owner | Active individual or family who can provide adequate exercise and training for a Bullmastiff. | Experienced, physically capable, emotionally stable handler who understands working-dog drives and provides clear, consistent boundary enforcement. |
Bullmastiff Dealbreakers
- Cannot meet 60-60 min daily exercise
- Cannot commit to grooming needs
Rottweiler Dealbreakers
- Inconsistent or permissive handling
- Intimidation by large physical strength
- Lack of 1.5+ hours of daily engagement
- Rental housing with breed bans
Surrender Risk
| Factor | Bullmastiff | Rottweiler |
|---|---|---|
| Risk Level | Medium | High |
| Primary Reasons | Underestimated exercise needs, Behavioral challenges, Cost of care | Inability of owner to manage 45-55 kg of physical pulling power, Development of unmanaged territorial or same-sex dog aggression around age 2, Landlord breed bans or insurance cancellation upon rental lease checks, High veterinary costs associated with orthopedic or oncological diagnoses |
Temperament & Personality
Behavior Comparison
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| Prey Drive | ||
| Watchdog Ability | ||
| Stranger Friendly | ||
| Drool Level | ||
| Wanderlust |
Vocalization
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| Barking Level | Low | Low |
| Howling Tendency | ||
| Whining Tendency | Low | N/A |
| Separation Vocalization |
Safety & Reliability
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| Escape Artist | ||
| Dog Park Suitable | ||
| Off-Leash Reliable | ||
| Small Animal Safe | ||
| Leash Reactivity | ||
| Resource Guarding Risk | Low | Moderate-High |
Bullmastiff Social Traits
Moderate
Selective
Rottweiler Social Traits
Reserved, polite indifference toward neutral strangers; watchful and aloof
Moderate to High (same-sex intolerance common past maturity)
Training
Bullmastiff
- ** Positive reinforcement is the only viable path. Harsh corrections often cause this breed to shut down or become defensive.
Rottweiler
- Prioritize neutral socialization between weeks 8 and 16.
- Instill rapid impulse control and an immediate release ('out') command during play.
- Desensitize to mouth, ear, and paw handling during early puppyhood.
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.
Rottweiler Considerations
Not novice friendly; unsuitable for inconsistent, permissive owners or individuals intimidated by physical strength.
Categorized as restricted/dangerous dog (Listenhund) in parts of Europe and US municipalities, frequently banned by rental landlords and homeowner insurance.
Handlers must manage 45-55 kg of physical pulling power and potential same-sex dog aggression.
Multi-Species Compatibility
| Species | Bullmastiff | Rottweiler |
|---|---|---|
| With Cats | Generally safe with proper introduction | Moderate - manageable if raised alongside them indoors; outdoor neighborhood cats will be chased |
| Small Mammals | Supervision required | High risk - instinctual prey catch response |
| Birds / Reptiles | Caution advised | N/A |
Advanced Behavior
| Trait | Bullmastiff | Rottweiler |
|---|---|---|
| Predatory Sequence Risk | Medium | High risk toward small animals and neighborhood cats |
| Biddability | Low | High |
| Noise Sensitivity | Low | Low |
| Territorial Barking | ||
| Same-Sex Aggression Onset | 18 months | 18-24 |
Rottweiler: High reactivity threshold to initiate response, but explosive physical force when triggered. Stand-and-assess / Fight default.
First Year & Life Stages
First Year Challenges
| Challenge | Bullmastiff | Rottweiler |
|---|---|---|
| Puppy Difficulty | ||
| Destructive Phase | 6-18 | N/A |
| House Training | Moderate | N/A |
| Crate Training | Medium | N/A |
| Adolescent Regression |
Bullmastiff: Bullmastiff puppies require consistent training and patience.
Rottweiler: Strict ban on repetitive jumping, forced running, and stairs until growth plates close at 18-24 months. Bite inhibition training is an extreme urgency.
Life Stages Timeline
| Stage | Bullmastiff | Rottweiler |
|---|---|---|
| Puppy Phase | 12 months | 12 months |
| Adolescence | 6-18 | 12 - 24 months |
| Adult Years | 2-8 | 2.5 to 6.5 years |
| Senior Onset | ~8 years | ~6.5 years |
| Peak Energy Age | 1-3 years | N/A |
Size & Physical Characteristics
Physical Stats
| Measurement | Bullmastiff | Rottweiler |
|---|---|---|
| Height | N/A | 56 - 68 cm |
| Weight | Not enough data yet | Not enough data yet |
| Size Category | Extra Large | Large |
| Lifespan | 7–9 years | 8–10 years |
| Litter Size | 4-8 | 8 |
Bullmastiff Coat
Rottweiler Coat
Lineage & Origin
| Detail | Bullmastiff | Rottweiler |
|---|---|---|
| Original Purpose | Developed in mid-19th century England, the Bullmastiff was created by gamekeepers to combat poachers | Cattle drover (Treibhund), draught/carting dog (Metzgerhund), estate and personal protection guardian |
| Origin | N/A | Germany |
Breeding Details
| Detail | Bullmastiff | Rottweiler |
|---|---|---|
| C-Section Rate | Varies | 12-15% |
| Whelping Difficulty | Medium | Large puppy dystocia |
| Puppy Mortality Rate | Low | N/A |
Physical Risks
| Risk | Bullmastiff | Rottweiler |
|---|---|---|
| Bloat / GDV Risk | Low | High |
| Slippery Floor Risk | Low | High (aggravates elbow arthrosis, hip dysplasia, and CCL tears) |
| Min Fence Height | 1.5m | 1.83m |
| Dig / Escape Risk | Low | Low |
Health & Common Conditions
Bullmastiff Health Issues
Rottweiler Health Issues
Bullmastiff Suggested Tests
- OFA/PennHIP for hip/elbow dysplasia
- Echocardiogram for cardiac issues
- CERF for eye conditions
- Prophylactic gastropexy
Rottweiler Suggested Tests
- OFA / PennHIP Radiographic Evaluation for Hips (at or after 24 months)
- OFA Radiographic Evaluation for Elbows (at or after 24 months)
- Advanced Cardiac Examination by Board-Certified ACVIM Cardiologist (Echocardiogram with Doppler)
- JLPP DNA mutation marker test (mandatory for ARC / ADRK breeding stock)
- Annual ACVO Ophthalmic Exam
- Thyroid panel (free T4 by dialysis, cTSH, TgAA)
Health Risk Overview
| Risk Factor | Bullmastiff | Rottweiler |
|---|---|---|
| Cancer Risk | Medium | Very high |
| Cardiac Risk | Low | Medium |
| Neurological Risk | Low | Medium |
| CCL/ACL Tear Risk | Low | High |
| Vet Burden Tier | Medium | Very high |
Sensitivities & Allergies
| Sensitivity | Bullmastiff | Rottweiler |
|---|---|---|
| Skin Allergies | ||
| Environmental Allergies | ||
| Stomach Sensitivity | Low | High |
| Food Allergies | Chicken and chicken meal protein allergy, Diet-responsive food intolerance manifesting as loose stools |
Health Maintenance
| Care Item | Bullmastiff | Rottweiler |
|---|---|---|
| Nail Growth Rate | Normal | Normal |
| Eye Care Needs | Low | Low |
| Anal Gland Issues | Occasional | N/A |
Senior Care & Aging
Bullmastiff Senior Care
Common Senior Issues
- Arthritis
- Vision decline
- Cognitive changes
Senior care varies by individual health.
Rottweiler Senior Care
Common Senior Issues
- Severe osteoarthritis in elbows and hips
- Limb-sparing or amputation dilemmas due to osteosarcoma
- Cardiovascular decline (congestive heart failure secondary to DCM or SAS progression)
Provide non-slip floor runners, orthopedic memory foam beds, ramp access for vehicles, and joint nutraceuticals.
Grooming & Care
Bullmastiff
medium maintenanceRottweiler
low maintenanceLifestyle Compatibility
Bullmastiff Daily Life
Rottweiler Daily Life
Housing & Legal Restrictions
| Restriction | Bullmastiff | Rottweiler |
|---|---|---|
| BSL Restricted | ||
| Common Rental Ban | ||
| Insurance Blacklist | ||
| Weight Category | Under 50lbs | Large / 35-60 kg |
Climate Tolerance
| Climate | Bullmastiff | Rottweiler |
|---|---|---|
| Heat Tolerance | ||
| Cold Tolerance | ||
| Water Affinity | Medium | Moderate |
Travel Compatibility
| Activity | Bullmastiff | Rottweiler |
|---|---|---|
| Car Travel | Good | High |
| Camping | ||
| Beach Friendly | ||
| Hiking Rating | ||
| Cabin Flight Eligible | ||
| Hotel Friendly Size |
Niche Suitability
| Role | Bullmastiff | Rottweiler |
|---|---|---|
| Service Dog | Low | N/A |
| Therapy Dog | Low | Moderate (exceptional individuals with calm, steady temperaments; poor fit for excitable dogs) |
| Deep Pressure Therapy | ||
| Canicross / Bikejoring | ||
| Apartment Adaptable | ||
| Tactile / Sensory Friendly | ||
| Livestock Guardian | ||
| Medical Alert | Low | N/A |
Costs & Expenses
Upfront Costs
| Cost | Bullmastiff | Rottweiler |
|---|---|---|
| Purchase Price | N/A | 1800 - 3500 |
| Initial Cost Range | $1,000–$2,500 | $1,800–$3,500 |
| Cost Tier |
Ongoing Costs
| Cost | Bullmastiff | Rottweiler |
|---|---|---|
| Monthly Range | $180–$300 | $160–$260 |
| Yearly Range | $2,160–$3,600 | $450–$800 |
| Food / Month | $100-150 | N/A |
| Insurance / Month | $80-150 | N/A |
| Grooming / Session | N/A | N/A |
| Vet Routine / Year | $500-800 | 450 - 800 |
| Monthly Cost Tier |
Bullmastiff Lifetime Cost
N/A
Rottweiler Lifetime Cost
6000 - 15000 (reserves for TPLO surgery, cancer oncology, or bloat gastropexy)
Quirks & Fun Facts
Daily Quirks
| Quirk | Bullmastiff | Rottweiler |
|---|---|---|
| Snoring | ||
| Flatulence | Occasional | N/A |
| Slobber Level | Low | Copious viscous strings around food/water due to heavy pendulous flews |
| Smell When Wet | Moderate | N/A |
| Zoomies Frequency | Occasional | N/A |
| Counter Surfing | ||
| Digging Tendency | Low | N/A |
Rottweiler Quirks
The Rottie Rumble
A low-frequency vibrating chest purr produced when experiencing deep affection, often mistaken for a menacing growl.
The Cattle Bump
Using massive muscular shoulders to physically bump or guide family members and other animals rather than biting.
The Head Drop
Planting their heavy skull squarely on an owner's lap or foot with full deadweight to enforce physical touch.
The Toy Parade
Greeting returning household members with a toy clenched firmly in the jaws while rumbling and swaying the entire hindquarters.
Frequently Asked Questions
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