Consider These 11 Factors Before Adopting a Bullmastiff

Thinking about bringing home a Bullmastiff? These gentle giants are loyal, affectionate, and protective — but they’re definitely not the right fit for everyone. I’ve met a few over the years, and while they’re absolute sweethearts with their families, they come with big responsibilities (literally and figuratively).

Here’s what you really need to know before getting a Bullmastiff:

1. They Need Space — Lots of It
Bullmastiffs are big dogs — think 100 to 130 pounds and up to 27 inches tall. They’re not apartment-friendly unless you’ve got a serious yard or access to open space. Without room to move, they can get anxious, destructive, or even aggressive. Plus, tight quarters can lead to joint issues and weight gain.

2. Moderate Energy, But Still Need Daily Movement
Bullmastiffs aren’t hyper, but that doesn’t mean they’re couch potatoes 24/7. They need about 45–60 minutes of daily activity — walks, light jogs, or playtime in the yard. Puppies should avoid intense exercise since their joints are still developing. It's all about balance.

3. Early and Consistent Training Is a Must
These dogs are smart but can be headstrong. You’ll want to start obedience training early, using rewards and positive reinforcement. Teaching leash manners is especially important — imagine trying to hold back 120 pounds of enthusiasm on a walk!

4. Socialization Is Non-Negotiable
Bullmastiffs are naturally wary of strangers — it’s in their guard-dog DNA. But with early and ongoing socialization, they can be confident, friendly, and well-adjusted. Take it slow and steady with new experiences, people, and pets.

5. Grooming Is Manageable (But Still a Commitment)
Good news: their short coat just needs a weekly brush, though you’ll want to do it more often during shedding seasons. Don’t skip the basics either — regular baths, ear checks, dental care, and nail trims are all part of the routine.

6. Health Issues Are Common
The average Bullmastiff lives around 8–10 years and can face some serious health concerns like:

• Hip and elbow dysplasia
• Bloat (a medical emergency)
• Hypothyroidism
• Heart problems
• Certain cancers
• Eye conditions like entropion and cataracts

Make sure you’re prepared for vet visits and potential long-term care.

7. Temperament: Calm, Loving, and Protective
Bullmastiffs are big softies with their families — calm, affectionate, and great with kids (though supervision is key due to their size). They’re also natural protectors, so you’ll feel safe with one around. Just know they’re not overly social with strangers and don’t love being left alone for long stretches.

8. Weight Gain Can Sneak Up Fast
They’re prone to laziness if you let them. Without enough exercise and mental stimulation, they can pack on pounds — which leads to arthritis, heart issues, and other health problems. A bored Bullmastiff might also turn to chewing, barking, or digging.

9. Your Home Setup Matters
This breed does best in a house with a yard and a moderate climate. They don’t tolerate extreme heat or cold well. And while they’re not big barkers, when they do bark, it’s loud — not ideal for tight-knit neighborhoods.

10. They Take Up a Lot of Your Time
Between grooming, training, socialization, and health care, Bullmastiffs are a serious time investment. If your schedule’s already packed, this might not be the breed for you.

11. Legal Restrictions May Apply
Some cities or regions have breed-specific laws (BSL) that limit or ban ownership of certain breeds — including Bullmastiffs. Before falling in love with one, check your local laws. You might need a special permit, or ownership might be restricted altogether.

Final Thoughts
Bullmastiffs are incredible companions — loyal, gentle, and protective — but they’re not a casual commitment. They need space, structure, and someone who’s all-in on their care.

If you’re ready to provide that, you’ll be rewarded with a big-hearted, low-drama best friend who’ll always have your back.