Mastiff for Sale & Adoption USA

No dogs in this category are available right now.

Listings refresh regularly as shelters update their sites.

No Mastiffs listed on LocalPetFinder right now

That just means none are on the site at the moment, not that the breed is unavailable. New listings arrive from rescues and local owners all the time. Be first in line, or help one find a home.

Not seeing one yet?

Get notified when a Mastiff is listed in the US

We'll email you the moment a Mastiff is listed in the US on LocalPetFinder, from a rescue or an owner rehoming.

One email when there's a match. Unsubscribe anytime.

About the Mastiff

The Mastiff is a giant dog breed originating in England. Adult dogs typically weigh 120 to 230 pounds and live 7 to 10 years. Typical traits: calm, devoted, protective, patient-with-kids.

Households with space, a budget for giant-breed vet care, and adopters prepared for a 7–10 year lifespan. Calm and devoted indoors. Small apartments, hot climates, families with very small kids (the dog's weight is a risk), or tight budgets.

Adult Mastiffs need about 45 minutes of daily exercise; adolescent dogs typically need 60 minutes. The coat is short-coated with moderate shedding, and brushing every 4 weeks keeps the coat manageable.

LocalPetFinder aggregates adoptable Mastiffs from rescues across California, Colorado, and Texas into one searchable place. Use the city links above to narrow to your area, or browse the full list below.

Common health concerns for Mastiffs

Hip and elbow dysplasia
Nearly universal in giant breeds; OFA screening is standard. Source: OFA →
Bloat (gastric dilation-volvulus)
Life-threatening emergency; feed two smaller meals rather than one large. Source: ACVS →
Dilated cardiomyopathy
Heart muscle disease occurs in the breed; cardiac screening is recommended. Source: VCA →

Editorial summary for adopters, not medical advice. Consult your veterinarian for individual health guidance.

Mastiff Adoption FAQ

Tap a question to expand

How many Mastiffs are available for adoption in the US?▼

As of November 2026, there are no Mastiffs listed in the US rescue on LocalPetFinder right now — Mastiffs are among the rarer dogs in local rescue. Inventory turns over quickly, so setting an alert is the most reliable way to catch one, or consider an adoptable Mastiff mix.

Where can I adopt a Mastiff near me in the US?▼

LocalPetFinder lists adoptable Mastiffs from rescues across California, Colorado, and Texas in one searchable place. Use the city links above the listing to narrow to a city near you, or browse the full inventory below. Each profile links straight to the rescue to apply.

How long do Mastiffs live?▼

Mastiffs typically live 7 to 10 years.

How much exercise does a Mastiff need?▼

Adult Mastiffs need about 45 minutes of daily exercise. Adolescent dogs (under 2 years) typically need 60 minutes — more than mature adults.

What are common health concerns for Mastiffs?▼

Breed-associated conditions to ask the rescue about include Hip and elbow dysplasia, Bloat (gastric dilation-volvulus), Dilated cardiomyopathy. See the citations in the Health section above for authoritative information on each. This is editorial summary, not medical advice — consult your vet for individual guidance.

Are these Mastiffs for sale in the US?▼

Not for sale, for adoption, which is usually the better deal. Every Mastiff here comes from a the US rescue or shelter, not a breeder, pet store, or classified seller. Adoption fees are typically $250 to $650, with puppies at $450 to $800 and already include vaccinations, deworming, microchip and spay or neuter when age-appropriate, versus roughly several thousand dollars to buy a Mastiff from a breeder. If you searched "mastiff for sale the us" or "mastiff puppies for sale," adopting gets you a healthy, vetted dog for a fraction of the price.

Where can I buy a Mastiff in the US, and should I?▼

You can buy from a registered breeder, but it is worth weighing against adoption first. A reputable Mastiff breeder typically charges several thousand dollars and often has a waitlist, while a rescue Mastiff costs $250 to $650, with puppies at $450 to $800 fully vetted and may be available now. Be cautious of cheap mastiff-for-sale ads on classified sites and marketplaces, which are frequently backyard breeders or puppy-mill resellers with unvetted, sometimes sick animals and no health guarantee. If you do buy, insist on seeing where the puppies were raised and getting vet records. For most families in the US, adopting a rescue Mastiff is cheaper, faster, and gives a dog in need a home.

Are there free Mastiffs in the US, or mastiffs under $500?▼

Adoption is the closest honest answer, and it is not free. A rescue Mastiff in the US typically costs $250 to $650, with puppies at $450 to $800, so the lower end lands under the "$500" people search for and the rest does not. What the fee buys is work already done, the vaccinations, deworming, microchip and spay or neuter, which would cost more than the fee itself if you arranged it yourself, and it is still far below breeder prices. Be wary of genuinely free mastiff listings. An animal advertised free to a good home has usually not been vetted, and free rehoming ads are the route flippers and unregistered breeders use to move animals with no health guarantee and no recourse. Paying a rescue fee buys you a dog someone has already examined, treated, and been honest with you about.

Are there Mastiff puppies in the US, or only adults?▼

Both, but adults far outnumber puppies, and it is worth knowing that before you start looking. Most Mastiffs arriving in the US rescue are adolescents and adults, because that is the age at which first homes tend to give up. Puppies do come through, usually as accidental litters or with a surrendered mother, and they are typically spoken for quickly. Setting an alert beats refreshing the page. It is also worth asking whether you actually want one: an adult arrives with a temperament a foster has already observed and described, where a Mastiff puppy is a prediction, and for this breed in particular knowing what you are getting is the more useful thing.

Where can I find a Mastiff near me in the US?▼

Start with the listings on this page, which pull from the US rescues and shelters and are refreshed regularly, so what you see is what is genuinely available rather than a stale directory. If nothing suits today, that is normal for this breed: rescue intake is intermittent rather than steady, and a breed with none listed this week often has several next month. Setting an alert beats checking back, and it is worth widening to nearby towns, since most rescues serving the US will adopt out across a reasonable driving distance rather than only inside one municipality.

Could you be a Mastiff?

Our free personality quiz matches you to one of 92 dog breeds in about a minute, and the Mastiff is one of them. No signup.

Take the What Dog Breed Am I? quiz →

Adopt a Mastiff by state

Mastiffs in California Mastiffs in Colorado Mastiffs in Texas

Browse mastiffs by city