A brindle English Mastiff standing outdoors
Pleple2000 · CC BY-SA 3.0
A fawn Mastiff at seventeen months
Radovan Rohovsky · CC BY-SA 3.0
A fawn English Mastiff with a black mask
Wikimedia Commons contributor (Blikly) · Public domain
Working

Mastiff

Also known as: English Mastiff, Old English Mastiff

GiantUnited KingdomAncient British war/guard dog; refined 19th centuryHeat-sensitive ⚠AKC: WorkingFCI #264

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

Abnormal joint development is common in giant breeds. OFA hip and elbow evaluations of both parents are the standard of care. Lean body weight and controlled-growth puppy nutrition protect the joints.

Living with a Mastiff in Manila

This section is specific to Manila (Bureau of Animal Industry (BAI) / Local Government Unit (LGU)). The rest of this guide applies to the breed anywhere.

PAWS Philippines / CARA Welfare: Not eligible

This breed is not eligible for PAWS Philippines / CARA Welfare.

Licensing

Dog registration required under the Anti-Rabies Act of 2007 (Republic Act No. 9482): register with your local Barangay or City Veterinary Office; annual rabies vaccination mandatory for registration; registration fees PHP 100–500/year depending on LGU. Philippines is NOT rabies-free — annual vaccination is a legal requirement. Source: BAI Philippines (bai.gov.ph); RA 9482.

Climate & exercise in Manila

Manila is tropical maritime; three seasons — warm dry (March–May, 32–38°C), rainy (June–November, typhoon season), cool dry (December–February, 22–28°C); Metro Manila hottest March–May; year-round tropical humidity. walk before 7:30am or after 6pm year-round; March–May peak heat is dangerous — limit walks to before 7am; pavement in direct sun reaches 55°C+ at midday; Manila urban heat island intensifies early-afternoon temperatures. Metro Manila's tropical heat peaks March–May (32–38°C) with extreme humidity — heatstroke risk is highest during this period for all dogs, and genuinely dangerous for brachycephalic breeds (French Bulldog, Pug, Shih Tzu, Bulldog) at any time outside the early-morning window. Typhoon season (June–November) brings flooding in low-lying barangays — leptospirosis from floodwater contact is a documented risk for Manila dogs. Annual rabies vaccination is a legal requirement under the Anti-Rabies Act of 2007; any animal bite in the Philippines requires immediate medical attention and post-exposure prophylaxis at the nearest Animal Bite Treatment Center (ABTC).

Parasite prevention

Plan for year-round heartworm prevention essential (Culex and Aedes mosquitoes active all 12 months; typhoon season June–November dramatically increases mosquito breeding habitat); tick-borne disease (Ehrlichia canis, Babesia canis/gibsoni) high risk year-round — Rhipicephalus sanguineus endemic in Metro Manila residential areas; annual rabies vaccination legally required under RA 9482 (Philippines is NOT rabies-free); leptospirosis risk during and after flooding (June–November typhoon season) — keep dogs away from floodwater.

Cost of ownership in Manila

Local Mastiff cost figures for Manila 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

ConditionPrevalenceInheritanceScreening test
Hip & elbow dysplasiacommonpolygenicOFA hips & elbows
Gastric dilatation-volvulus (bloat)high-risk (giant deep-chested)owner awareness; gastropexy discussed
Cardiomyopathy & cardiac diseasebreed-associatedCardiac exam/echo
Cystinuria (urinary stones)occasionalautosomal recessive (type-specific)DNA / urine testing

DNA & screening panel

TestWhen advisedBody
Hip & elbow evaluationbefore breedingOFA
Cardiac exambefore breedingOFA
Ophthalmologist eye exambefore breedingOFA / ECVO
Cystinuria DNA/urine testbefore breedingOFA-approved labs

Cost of ownership

Setup
approx. S$2,500–4,500 SGD equiv.
Monthly
approx. S$400–700 SGD equiv.
Lifetime est.
approx. S$35,000–60,000 SGD equiv.

FLAG: indicative Singapore estimate — very high food/medication doses by weight; short lifespan limits total years.

Registries

FCI#264Group 2AKCWorkingKC (UK)WorkingANKCGroup 6 (Utility)

Sources & references

  1. AKC — Mastiff breed standard & traits[Breed standard / registry]
  2. The Kennel Club (UK) — Mastiff[Breed standard / registry]
  3. Merck Veterinary Manual — hereditary and breed-associated disease[Veterinary reference]
  4. Orthopedic Foundation for Animals (OFA) — breed health screening / CHIC testing[Peer-reviewed / VetCompass / OFA]
  5. NParks/AVS — Pets in HDB flats (approved small breeds; ≤55 cm shoulder height)[Breed standard / registry] · checked June 2026
  6. 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. PawHub 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