Working · Giant (100-130 lbs) · 7-9 years
Bullmastiff
Affectionate, loyal, brave; calm family guardian - the 'Gamekeeper's Night Dog.'
At a glance
What they’re great at
Honest challenges
Small fast animals flip an ancient switch - this is wiring, not disobedience.
What helps: Management IS the training: never unsupervised with small pets, period. Secure fencing plus leash or long line outdoors for life. Feed the drive legally: flirt pole and lure-chase games.
Not every dog wants a hundred friends - this breed prefers a curated list.
What helps: Quality over quantity: a few calm, known companions beat any dog park. Parallel walks are the gold-standard introduction. Advocate for their space - declining strange dogs is good ownership.
Centuries of guarding don't switch off for dinner parties.
What helps: Massive early neutrality socialization: calm around strangers, not friends with all. Door protocol: place command and managed greetings - no self-employment as bouncer. Never encourage 'protection' - confidence comes from training, not suspicion.
The combination of drive, power, or independence punishes improvisation.
What helps: A rewards-based professional from week one is the cheat code. Find a breed mentor: the parent club and this breed's Pack. Structure and routine do half the training for you.
Exercise & training
Grooming & coat
Health to know about
This page can only give breed ranges. The app calculates calories and portions from your dog’s actual weight and life stage, splits them across the right number of meals, and adjusts as they grow.
Emergency red flags
Vomiting, drooling, tremors, collapse, or known ingestion
→ Call ASPCA Poison Control 888-426-4435 or Pet Poison Helpline 855-764-7661 immediately; do NOT induce vomiting unless instructed
→ Save your nearest 24-hour emergency vet's address and phone in your phone TODAY, not during a crisis
Unproductive retching (trying to vomit, nothing comes), rapidly swelling/hard belly, drooling, pacing, sudden distress after eating
→ Drive to the ER immediately. Do not wait to see if it passes. Untreated GDV is fatal within hours
The app keeps every Bullmastiff red flag on your phone and opens them with no connection at all — which is the whole point at 2am in a car park. Add it to your home screen and it works like any other app.
📊 The numbers›
Typical ranges for planning, not promises — costs vary by region, breeder and individual dog.
| Group | Working |
| Size | Giant (100-130 lbs) |
| Lifespan | 7-9 years |
| Healthy adult weight | 100–130 lb |
| Original purpose | Apprehending poachers on English estates. |
| Monthly care | $140-$230 |
| Typical puppy price | $1,500-$3,000 |
🐕 Similar breeds›
Add them in the app for feeding by weight, training for their stage, and Bullmastiff emergency red flags saved to your phone. Free, no account needed.
Add them once and everything here becomes about your dog: feeding by their weight, training picked for their stage, a day built around your hours, and a vitals log that shows the trend. Free, works offline, no account needed.