Dog breeds / Giant breeds

What a Mastiff really costs

The Mastiff is the heaviest dog in this guide, and most of its costs scale with weight: Mastiff Rescue estimates 40-80 pounds of food a month, and heartworm pills sometimes have to be doubled. Its exercise needs are low, but a 6-10 year lifespan plus bloat and joint risks make it one of the most expensive breeds to insure.

Size: Giant, 120–230 lb
Life expectancy: 6–10 years
Grooming: Low
Insurance risk: High
Puppy price: $1,500–$3,500
Food a day: About 2,550 calories

Where the money goes each year

A typical adult year for a Mastiff with mainstream food, home grooming, no insurance, in an average-cost area. That's $2,250 more than the median breed.

Illness and injury (average)$2,039
Food$1,322
Heartworm, flea and tick prevention$457
Dental cleanings$425
Checkups, vaccines and tests$330
Toys, beds and everyday supplies$330
Treats and chews$264
Grooming$53
License$20
Typical year$5,240

Most years land between $3,740 (budget food, home grooming, lower-cost area) and $7,640 (premium food, groomer, insurance, big city). Dogs over about 5 add about $180 a year for senior checkups.

The first year

Buying a puppy front-loads the bill: the price, gear, puppy shots and spay or neuter.

Bringing a puppy home

Breeder price$2,500
Crate, bed, leash, bowls and gear$900
Spay or neuter$760
Microchip$50
Puppy or basic obedience class$149
Upfront$4,360

Running costs in year one

Food$1,322
Treats and chews$264
Puppy vaccines and checkups$738
Heartworm, flea and tick prevention$457
Grooming$53
License$20
Illness and injury (average)$2,039
Year-one running costs$4,890

First-year total: $9,250. Adopting instead brings it to about $5,860.

Health costs to plan for

Insurify's Fletch quote data made the Mastiff the most expensive breed to insure at $2,546 a year, versus a $700 national average, and The Zebra also ranks it first.

Condition	How it affects Mastiffs	Typical treatment	Cost
Gastric dilatation-volvulus (bloat)	AKC lists bloat among Mastiff risks; a JAVMA cohort found giant breeds had 26 GDV cases per 1,000 dog-years, and about 52% of giant-breed cases were linked to raised food bowls. Source	Emergency GDV surgery with gastropexy (Lemonade average cost range for English Mastiffs)	$2,500–$7,500
Hip dysplasia	20.3% of 14,037 Mastiff hip evaluations at OFA were graded dysplastic. Source	Total hip replacement, per hip (giant implants and anesthesia push toward the top of the range)	$3,500–$15,000
Cranial cruciate ligament tear	Lemonade lists torn knee ligaments among common English Mastiff claims; giant dogs need larger TPLO plates and more screws. Source	TPLO surgery (University of Missouri quoted $4,500-$5,000 for giant breeds in 2021; Lemonade gives up to $10,000 in 2026)	$4,500–$10,000
Elbow dysplasia	15.5% of 8,716 Mastiff elbow evaluations at OFA were abnormal. Source	Elbow dysplasia workup and surgery or medical management (Lemonade average cost range)	$1,200–$3,500

The yearly estimate already includes an average allowance of $2,039 for illness and injury. A single surgery can cost several times that, which is the case for an emergency fund or insurance.

What drives the cost of a Mastiff

Mastiff Rescue notes a Mastiff can eat 40-80 pounds of premium food a month and may need two heartworm tablets per dose, so prevention costs about double what a Labrador owner pays.
Everything is sized up: an extra-extra-large crate, an orthopedic bed that holds 200 lb, and a vehicle or ramp to load a dog you can't lift.
Anesthesia, pain medication and antibiotics are dosed by weight, so a routine dental cleaning or spay costs more than for any large breed.
Budget for towels and cleaning: AKC notes Mastiffs drool heavily and need their facial wrinkles cleaned to prevent skin infections.
Keep puppies off stairs and long walks while they grow, as AKC advises, to protect joints that would be expensive to repair.

Breeder or rescue

Reputable breeder: $1,500–$3,500
Rescue or shelter: $150–$500
Lifetime, from a breeder: $46,000
Lifetime, adopted: $42,700

The Mastiff Club of America says puppies usually run $1,500 and up depending on pedigree, show potential and location, and warns a higher price is not proof of a healthier dog. The top of the range is an estimate. No rescue fee schedule was found; the adoption range assumes typical breed-rescue fees.

Adopting vs buying: the full cost comparison

Similar-size breeds by yearly cost

Leonberger$4,940 a year
Bernese Mountain Dog$4,980 a year
Great Dane$5,020 a year
Dogue de Bordeaux$5,040 a year
Irish Wolfhound$5,260 a year
Saint Bernard$5,470 a year
Compare all breeds

Common questions

How much does a Mastiff puppy cost?

A Mastiff puppy from a reputable US breeder typically costs $1,500–$3,500. Adopting one through a rescue usually costs $150–$500.

How much does a Mastiff cost per year?

After the first year, a Mastiff costs about $5,240 a year, or $437 a month, for food, vet care, preventives, grooming, supplies and average illness costs. Depending on food, grooming, insurance and where you live, a typical year ranges from about $3,740 to $7,640.

How much does a Mastiff cost over its lifetime?

About $46,000 over a 8-year life when bought from a breeder, or $42,700 if adopted, in 2026 dollars.

Sources

Prices are averages from the sources above and the cost baselines on our methodology page, in 2026 US dollars. Your vet, groomer and city will differ. Updated October 14, 2026.