Bullmastiff vs Mastiff: Complete 2026 Breed Comparison
Quick Verdict: Both breeds make excellent family dogs with comparable energy and care needs. Your lifestyle, space, and grooming preferences will be the deciding factors.
At a Glance
| Trait | Bullmastiff | Mastiff |
|---|---|---|
| Size | Large | Medium |
| Weight | 100-130 lbs | 30-60 lbs |
| Height | 24-27″ | 16-22″ |
| Energy Level | Low | Moderate |
| Shedding | Moderate | Moderate |
| Grooming Needs | Easy | Moderate |
| Lifespan | 7-9 yrs | 10-14 yrs |
| Good With Kids | Yes | Yes |
Size & Temperament
The Bullmastiff is a large-sized dog weighing 100-130 lbs, known for being loving, loyal, reliable. They are relatively laid-back and adapt well to a variety of household routines.
The Mastiff, by comparison, is a medium-sized breed weighing 30-60 lbs with a loyal, intelligent, friendly personality. Their calmer disposition makes them a flexible fit for both houses and larger apartments.
Kids and Other Pets: The Bullmastiff is generally yes with children and moderate with other dogs. The Mastiff scores yes with kids and yes around other dogs. If your household includes young children or multiple pets, factor these scores into your decision.
Health & Lifespan
The Bullmastiff has an average lifespan of 7-9 yrs with an overall health score of 7/10. Regular vet checkups and a quality diet will help maximize their years.
The Mastiff typically lives 10-14 yrs with a health rating of 7/10. Responsible breeding and genetic testing reduce common breed-specific risks.
Vet Cost Estimate (Annual):
| Expense | Bullmastiff | Mastiff |
|---|---|---|
| Routine exams | $200-$400 | $200-$400 |
| Vaccinations | $75-$150 | $75-$150 |
| Dental care | $200-$500 | $200-$500 |
| Potential breed issues | $300-$1,000+ | $300-$1,000+ |
Pet health insurance is strongly recommended for both breeds. Compare plans at [Pawlicy Advisor](https://www.pawlicy.com/) or [Healthy Paws](https://www.healthypaws.com/).
Care & Grooming
Bullmastiff: Grooming needs are rated Easy. Brush weekly and bathe as needed — low maintenance overall.
Mastiff: Grooming needs are rated Moderate. A monthly grooming routine with weekly brushing keeps this breed looking its best.
Exercise Needs:
- Bullmastiff: 30 minutes of moderate activity daily.
- Mastiff: 30 minutes of moderate activity daily.
Top-rated supplies for both breeds: [Chewy](https://www.chewy.com/) | [Amazon Pet Supplies](https://www.amazon.com/pet-supplies/) | [PetSmart](https://www.petsmart.com/)
Cost
| Cost Category | Bullmastiff | Mastiff |
|---|---|---|
| Puppy Price (Breeder) | $1,000-$2,500 | $800-$2,000 |
| Annual Food | $600-$1,200 | $600-$1,200 |
| Grooming (annual) | $100-$300 | $200-$500 |
| Vet care (annual) | $500-$1,500 | $500-$1,500 |
| Training classes | $150-$300 | $150-$300 |
Consider adoption as a cost-effective alternative — visit [Petfinder](https://www.petfinder.com/) or [Adopt-a-Pet](https://www.adoptapet.com/) to find Bullmastiffs and Mastiffs in need of homes.
Frequently Asked Questions
Q: Which is easier to train, the Bullmastiff or the Mastiff?
A: The Bullmastiff has a trainability rating of Moderate, while the Mastiff rates Moderate. Both respond well to positive reinforcement and consistent routines.
Q: Can either breed live in an apartment?
A: The Bullmastiff is no for apartment living; the Mastiff is moderate. The Mastiff is generally the better fit for smaller living spaces.
Q: Which breed is better for first-time dog owners?
A: Both breeds can work for first-time owners who commit to training and socialization.
Final Recommendation
Choose the Bullmastiff if you want a loving companion with low energy and 7-9 yrs lifespan potential.
Choose the Mastiff if a loyal dog with moderate energy and 10-14 yrs longevity suits your household better.
Either way, connect with a reputable breeder through the [AKC Marketplace](https://marketplace.akc.org/) or explore rescue options at [Petfinder](https://www.petfinder.com/).
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