Mastiff
Also known as: English Mastiff, Old English Mastiff
One of the largest dog breeds by mass - a gentle, dignified English guardian that is calm, good-natured and deeply affectionate with its family. Quietly loyal and patient, the Mastiff combines a courageous heart with a steady, trustworthy temperament that makes it a remarkable companion.
Origin and purpose
The Mastiff is an ancient British type, used over millennia as a war dog, estate guardian and (less creditably) in blood sports, before being refined into the modern show breed in the 19th century. It was bred above all to be a massive, intimidating but steady guardian.
Temperament
Kennel authorities describe the Mastiff as dignified, good-natured, calm and courageous — devoted to its family and naturally protective without being aggressive when well-raised. It is sensitive and responds best to gentle, consistent training. Its size demands early manners training while it is still liftable. Individual temperament varies more than the breed label suggests (Morrill et al., Science 2022).
Health and longevity
As a giant breed the Mastiff is typically short-lived. Controlled growth, lean weight and breeders who health-test are essential.
Common health conditions
Living with a Mastiff in Quezon City
This section is specific to Quezon City (Quezon City Veterinary Department / Bureau of Animal Industry (BAI)). The rest of this guide applies to the breed anywhere.
PAWS Philippines / CARA Welfare / QC City Pound: Not eligible
This breed is not eligible for PAWS Philippines / CARA Welfare / QC City Pound.
Licensing
Dog registration required under the Anti-Rabies Act of 2007 (RA 9482): register with Quezon City Veterinary Department or your Barangay; annual rabies vaccination mandatory; fees PHP 100–500/year. Philippines is NOT rabies-free — annual vaccination is a legal requirement.
Climate & exercise in Quezon City
Quezon City is tropical maritime; hot dry season March–May (32–36°C); rainy/typhoon season June–November; cool dry December–February (22–28°C); Metro Manila urban heat island effect pronounced in Quezon City's densely built barangays. walk before 7:30am or after 6pm year-round; March–May peak heat — limit walks to before 7am; UP Diliman and QMC provide shade cover for midday emergencies but avoid pavement in direct sun. Quezon City's tropical heat peaks March–May with extreme humidity — heatstroke is a genuine risk for all dogs and particularly dangerous for brachycephalic breeds. Typhoon season (June–November) brings flooding especially in low-lying barangays near Diliman Creek and San Juan River — keep dogs away from floodwater due to leptospirosis risk.
Parasite prevention
Plan for year-round heartworm prevention essential; tick-borne disease (Ehrlichia canis, Babesia canis/gibsoni) high risk year-round — Rhipicephalus sanguineus endemic; annual rabies vaccination legally required (RA 9482); leptospirosis risk from floodwater during typhoon season June–November.
Cost of ownership in Quezon City
Local Mastiff cost figures for Quezon City are being verified. Budget for purchase or adoption, initial setup, food, grooming, routine veterinary care, parasite prevention and pet insurance. Figures are quoted in ₱.
Health & longevity
Responsible breeders health-test their breeding dogs. Ask to see current certificates before committing.
Nutrition note: Giant-breed controlled-growth puppy diet and lean adult weight protect joints; multiple smaller meals reduce bloat risk.
Known breed conditions
DNA & screening panel
Cost of ownership
FLAG: indicative Singapore estimate — very high food/medication doses by weight; short lifespan limits total years.
Registries
Sources & references
- AKC — Mastiff breed standard & traits[Breed standard / registry]
- The Kennel Club (UK) — Mastiff[Breed standard / registry]
- Merck Veterinary Manual — hereditary and breed-associated disease[Veterinary reference]
- Orthopedic Foundation for Animals (OFA) — breed health screening / CHIC testing[Peer-reviewed / VetCompass / OFA]
- NParks/AVS — Pets in HDB flats (approved small breeds; ≤55 cm shoulder height)[Breed standard / registry] · checked June 2026
- Morrill et al., "Ancestry-inclusive dog genomics…", Science 376 (2022) — breed ≈ 9% of behaviour[Peer-reviewed / VetCompass / OFA] · 2022
Source tiers: 1 = breed standard / registry authority; 2 = peer-reviewed / VetCompass / OFA; 3 = veterinary reference; 4 = encyclopaedic. OurPetCircle cites only tiers 1–4 and never blogs or e-commerce pages. Behavioural traits carry low confidence — breed explains ~9% of individual behaviour variation (Morrill et al., Science 2022).
Image credits
- Image 1: Pleple2000 · CC BY-SA 3.0 · via Wikimedia Commons
- Image 2: Radovan Rohovsky · CC BY-SA 3.0 · via Wikimedia Commons
- Image 3: Wikimedia Commons contributor (Blikly) · Public domain · via Wikimedia Commons
