Mastiff Adoption in Fairfield, CA: Mastiff Puppies for Sale in Fairfield, CA

Adopt a Mastiff near you in Fairfield, California

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near Fairfield, California

These Mastiffs are available for adoption close to Fairfield, California.

Rugby

Mastiff Cane Corso

Male, Young

Napa, CA

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Good with dogs, Spayed or Neutered,

Story

Rugby is a 1-year, 9-month-old Mastiff mix with a playful spirit and a sweet, sensitive side. He loves getting outside to run, play, and enjoy his toys, especially with his brother Romeo! Rugby can be shy with new people and unfamiliar places, but with a little patience, he begins to settle in and show his fun-loving personality. Primary Color: Tan Secondary Color: Black Weight: 74 Age: 1yrs 10mths 3wks

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Romeo

Mastiff Cane Corso

Male, Young

Napa, CA

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Spayed or Neutered,

Story

Romeo is a 1-year, 9-month-old Mastiff mix with a playful, social personality! This big, handsome guy loves attention, playtime, and treats, and has done well meeting other dogs, including having a blast playing with his brother. Romeo is affectionate, food-motivated, and ready to bring lots of love (and plenty of play bows!) to his new family. Primary Color: Tan Secondary Color: Black Weight: 76 Age: 1yrs 10mths 3wks

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Sully

Mastiff Cane Corso

Male, Adult

Pittsburg, CA

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Meet Sully! Looking for a giant lap dog, BFF, and big drooly shadow who wants to go everywhere with you? Sully might be your guy.Sully is a 6 ish year old Mastiff, 135lbs ish, easy going and sweet as pie. He has one good eye, the 'good eye' had cherry eye repair on it but it may pop out again, otherwise he is doing great. Personality: Sully is a gem! He's the definition of a social butterfly- incredibly friendly and affectionate, just loves being right by his person's side.Things he loves: Car rides, little adventures, walks, just being part of your everyday life. He is very much a 'where are we going?' kind of dog.Potty trainedCrate trainedSully will go into a crate, but it definitely isn't his favorite place to be. He would much rather be hanging out with you.Other dogs: Sully is very social and friendly w/ other friendly dogs. He would likely do well with another chill, friendly dog who matches his easygoing energy.Cats: Sully currently lives well w/ a confident cat. With a proper intro he should do ok living with cats.Kids: Sully is a big guy! He can absolutely knock over small kids. Ideally best w/ older kids comfortable around giants.Quirks: Despite his size, Sully is pretty convinced he is lap-dog sized. He would happily spend his whole day following you around, leaning on you, and being your oversized drooly shadow.Ideal home: Sully would thrive with someone comfortable with giant breeds who understands the importance of keeping a big guy's joints safe and their maintenance and costs. He's already ramp trained for getting in and out of the car and would love someone who wants to bring him along rather than leave him behind. Someone looking for a big goofy bff to tag along for coffee runs, walks, little adventures, and then come home and hang out on the couch. Sully really just wants to be included in life, and honestly, with that big drooly face, it's pretty hard not to include him. All K9ppr dogs are fixed, microchipped, vaccinated etc prior to adoption. #bayareadogrescue #mastiffrescue #corsoPlease note-detailed adoption app required! We're looking for the right forever fit www.K9ppr.org September 18, 2026, 5:26 pm

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KICKBOX

Mastiff

Male, 8 mos

Martinez, CA

Size

(when grown) Small 25 lbs (11 kg) or less

Details

Story

This goofy, playful puppy loves people and other dogs alike. He’s happiest running and wrestling with his canine friends, and he enjoys plenty of attention from his handlers too. New people and environments can take a little getting used to, so he’ll do best with patient adopters who can help him build confidence while giving him plenty of opportunities for play, exploration, and rest.

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Adam

Mastiff Mixed Breed (Medium)

Male, 2 yrs 5 mos

Oakland, CA

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Spayed or Neutered,

Story

Adam is an 80-pound silly, calm and cuddly boy doing so well with his amazing\ foster who says her favorite qualities are his squishy, loveable face, his soft fur, and his smile. Adam walks well on leash and is eager to "sit" for his dinner. He gets along great with other dogs. He is calm, playful and has good manners and is not overly curious about cats. He is low energy but really enjoys going for walks and being let out to run and explore in a fenced area. Adam is protective of his family and property and, with proper introductions, is the most loyal and gentle guy! He needs an adopter who can guide him with boundaries and offer lots of socialization opportunities. Everyone who meets Adam falls in love with him! He's just waiting for the right one who's ready to provide him a stable and loving home. If that's you, please submit an application and a volunteer will be in touch! (HD)

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Hugo

Mastiff Mixed Breed (Large)

Male, 10 mos

Oakland, CA

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Spayed or Neutered,

Story

Hugo is a charming boy with a loyal and easy-going personality. He’s a happy, inquisitive puppy who loves exploring. He especially enjoys chasing bouncing balls! Hugo is a moderate to high-energy pup, thriving on exercise and companionship, making him perfect for an active family or individual. Hugo is a social and adaptable pup. He’s a bit reserved at first when meeting new people but quickly warms up and recognizes familiar faces. He enjoys meeting children and has done well around other dogs and small animals. He’s also learning to relax around other dogs during walks and social interactions. Leash manners are already improving—Hugo walks well with a harness and is learning to enjoy walks with a collar. He settles nicely when passing other dogs on walks and is quickly gaining confidence and relaxation around new canine friends. Hugo is house- and crate-trained and enjoys car rides. As a gentle, mellow and affectionate puppy, Hugo loves being read to, snuggling on your legs, and receiving body massages. He’s a wonderful companion for an active family, couple, or single person ready to give him love, guidance, and plenty of fun adventures. (AO) Estimated adult weight is 75 pounds, no guarantees.

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Mastiff puppies and dogs in Fairfield, California

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Adopt a Mastiff near you in Fairfield, California

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near Fairfield, California

These Mastiffs are available for adoption close to Fairfield, California.

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Fairfield, California

Mastiff shelters & rescues in Fairfield, California

Looking for a specific shelter or rescue?

Want to learn more about adopting a Mastiff puppy or dog?

Mastiff basics

Mastiff basics