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

Adopt a Mastiff near you in Napa, California

These Mastiffs are available in Napa, 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 2wks

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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 2wks

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

These Mastiffs are available for adoption close to Napa, 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

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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

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KICKBOX

Mastiff

Male, 8 mos

Martinez, CA

Size

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

Details

Story

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Duke

Mastiff Boxer

Male, Young

Santa Rosa, CA

Size

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

Details

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

Story

Duke is a sweet, silly and gentle two-year-old BoxerMastiff mix. He truly doesn't have a mean bone in his body; he adores people, kids, and even cats! Duke is fully house-trained, crate-trained, and up-to-date on all his vaccinations. He walks best with a Halti, he’s still learning not to pull and can be a bit reactive on leash, so an experienced handler is preferred. He is a familiar with doggie daycare and has stayed multiple times at a care facility. Duke would thrive in a home with a large yard or open space to roam, as he’s definitely not suited for apartment living. He’s the most loving and loyal companion you could ask for…a total velcro dog! Unfortunately, work schedules have changed, and we no longer have the time that Duke truly deserves so we are hoping to find him a home where he can get the love, exercise, and space he needs. He has not been neutered yet because he’s a large breed and still growing.

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Stormi

Mastiff

Female, Young

Concord, CA

Size

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

Details

Not good with cats, House-trained, Spayed or Neutered,

Story

Stormi is a sweetheart! The only reason we are re homing her is because I’m a single mom and I don’t have the time to fully give her and I worry about her with my son due to her size and my son not having great boundaries. She has never bitten, she’s a quick learner and responds well to training! I want her to find her forever home, we’ve had her since she was 14weeks, she’s now 1yr 6 mo

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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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These pups are in Napa, California too!

Below are our newest added Mastiffs available for adoption in Napa, California. To see more adoptable Mastiffs in Napa, California, use the search tool below to enter specific criteria!

Charlie

Bullmastiff

Male, Young

Napa, CA

Size

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

Details

Spayed or Neutered,

Story

Meet Charlie! He is a neutered, almost 2-year-old, Bullmastiff mix. This handsome gentle giant is a sweet, affectionate guy who loves being close to his people. He's lived with other dogs before, appears to have some house-training experience, and has plenty of love to give. Charlie is ready to find a family of his own! Primary Color: Brown Secondary Color: White Weight: 72 Age: 1yrs 10mths 2wks

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Adopt a Mastiff near you in Napa, California

These Mastiffs are available in Napa, California.

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

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

These pups are in Napa, California too!

Below are our newest added Mastiffs available for adoption in Napa, California. To see more adoptable Mastiffs in Napa, California, use the search tool below to enter specific criteria!

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Mastiff puppies and dogs in Napa, California

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Adopt a Mastiff near you in Napa, California

These Mastiffs are available in Napa, California.

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

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

These pups are in Napa, California too!

Below are our newest added Mastiffs available for adoption in Napa, California. To see more adoptable Mastiffs in Napa, California, use the search tool below to enter specific criteria!

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Napa, California

Mastiff shelters & rescues in Napa, California

Looking for a specific shelter or rescue?

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

Mastiff basics

Mastiff basics