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Mastiff puppies and dogs in Mill Valley, California

Looking for a Mastiff puppy or dog in Mill Valley, California? Adopt a Pet can help you find an adorable Mastiff near you.

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Adopt a Mastiff near you Mastiff in cities near Mill Valley, California Other pups in Mill Valley, California Search for a Mastiff puppy or dog near you Browse Mastiff puppies and dogs in nearby cities Browse related breeds in Mill Valley, California Mastiff shelters and rescues in Mill Valley, California Learn more about adopting a Mastiff puppy or dog

Adopt a Mastiff near you in Mill Valley, 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 Mill Valley, California

These Mastiffs are available for adoption close to Mill Valley, California.
We'll also keep you updated on Adam's adoption status with email updates.
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Adam

Mastiff Mixed Breed (Medium)

Male, 1 yr 10 mos
Oakland, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Adam is a 65-pound calm and cuddly boy who is doing well with his amazing foster. He now walks on a leash and is eager to "sit" for his dinner. He gets along great with female dogs and is not overly curious about cats. He is a protective boy over his family and property, but when given proper introductions, he is the most loyal and gentle guy you'll ever meet. He needs an adopter who can guide him with boundaries and offer lots of socialization opportunities.

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We'll also keep you updated on Breathless Mahoney's adoption status with email updates.
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Photo of Breathless Mahoney

Breathless Mahoney

Mastiff Mixed Breed (Medium)

Female, 2 yrs 6 mos
Oakland, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Breathless Mahoney is a gorgeous ~2 year-old mastiff mix. Mahoney currently weighs 90 lbs, but needs to gain some weight and will probably fill in at around 100-120 lbs. Breathless Mahoney is a little shy with new people but once she warms up, she loves to play and snuggle. She is very playful with other dogs and has a puppy-like rough-and-tumble play style. If you're interested in Breathless Mahoney, fill out a questionnaire today!

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We'll also keep you updated on Olaf's adoption status with email updates.
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Olaf

Mastiff

Male, Adult
Vallejo, CA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
Primary Color: Grey Secondary Color: Grey Weight: 75 Age: 3yrs 6mths 1wks

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We'll also keep you updated on Apollo's adoption status with email updates.
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Apollo

Mastiff

Male, Young
Castro Valley, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Shots are up-to-date,
Story
Meet our sweet boy Apollo 🐾 Apollo just turned 2 years old on January 5, 2026. He is a loving, affectionate pup who adores belly rubs and enjoys spending time with his people. Apollo is well-mannered and knows basic commands such as sit, stay, lay down, and shake paws. We are heartbroken to say that we are looking for a new family for Apollo due to circumstances beyond our control—our landlord has required that we rehome him. This decision has not been easy, and our only wish is to find a home that will love and care for him just as much as we do. If you are willing to give Apollo a chance and provide him with a safe, loving forever home, please reach out. He truly deserves a family who will cherish him.

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We'll also keep you updated on Nova's adoption status with email updates.
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Nova

Mastiff

Female, Adult
Concord, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
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We'll also keep you updated on She-Ra's adoption status with email updates.
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She-Ra

Mastiff

Female, 7 yrs
Dublin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered, Shots are up-to-date,
Story
Do you like BIG dogs? She-Ra may be your girl! She is a female Mastiff mix, who is approximately seven years old, and currently weighs 93 pounds. Despite her size, she is a lower-energy pup, who enjoys going for walks, but is mostly happy to hang out and just be by your side! She was brought to our shelter on 11/17/25 after being found in unincorporated Livermore. She hasn't been reclaimed by her previous person, so she's now looking for a new home! She has been vaccinated, spayed, and micro-chipped. She-Ra is dog-selective, which is common amongst adult dogs, and means that she may appreciate some dogs more than others. If you already have another dog at home, we'll ask you to bring them to meet her too, prior to adoption. Her adoption fee is $35, plus licensing (if applicable). Her spay surgery has been sponsored by our friends at the Tri-Valley Animal Rescue! She-Ra qualifies for Senior Sunday! Adopt her on a Sunday and we'll waive her adoption fee!

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Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Mill Valley, California.

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Mastiff puppies and dogs in nearby cities

Mastiff Puppies near me Mastiff in Alameda, CA Mastiff in Albany, CA Mastiff in American Canyon, CA Mastiff in Belmont, CA Mastiff in Benicia, CA Mastiff in Berkeley, CA Mastiff in Burlingame, CA Mastiff in Clayton, CA Mastiff in Concord, CA Mastiff in Corte Madera, CA Mastiff in Cotati, CA Mastiff in Daly City, CA Mastiff in Danville, CA Mastiff in El Cerrito, CA Mastiff in Emeryville, CA Mastiff in Fairfax, CA Mastiff in Foster City, CA Mastiff in Fremont, CA Mastiff in Half Moon Bay, CA Mastiff in Hayward, CA Mastiff in Hercules, CA Mastiff in Hillsborough, CA Mastiff in Lafayette, CA Mastiff in Larkspur, CA Mastiff in Martinez, CA Mastiff in Millbrae, CA Mastiff in Moraga, CA Mastiff in Napa, CA Mastiff in Novato, CA Mastiff in Oakland, CA Mastiff in Orinda, CA Mastiff in Pacifica, CA Mastiff in Petaluma, CA Mastiff in Piedmont, CA Mastiff in Pinole, CA Mastiff in Pittsburg, CA Mastiff in Pleasant Hill, CA Mastiff in Redwood City, CA Mastiff in Richmond, CA Mastiff in Rohnert Park, CA Mastiff in San Anselmo, CA Mastiff in San Bruno, CA Mastiff in San Carlos, CA Mastiff in San Francisco, CA Mastiff in San Leandro, CA Mastiff in San Mateo, CA Mastiff in San Pablo, CA Mastiff in San Rafael, CA Mastiff in San Ramon, CA Mastiff in Sausalito, CA Mastiff in Sonoma, CA Mastiff in South San Francisco, CA Mastiff in Tiburon, CA Mastiff in Union City, CA Mastiff in Vallejo, CA Mastiff in Walnut Creek, CA Mastiff in Woodside, CA

Related breeds in Mill Valley, California

Bullmastiffs in Mill Valley, California Neapolitan Mastiffs in Mill Valley, California Saint Bernards in Mill Valley, California

Mastiff shelters & rescues in Mill Valley, California

There are animal shelters and rescues that focus specifically on finding great homes for Mastiff puppies in Mill Valley, California. Browse these Mastiff rescues and shelters below.

Here are a few organizations closest to you:

Rescue

18.9 miles

Rocket Dog Rescue

3561 Foothill Blvd, Oakland, CA 94601

Pet Types: dogs

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Shelter

20.3 miles

Humane Society of the North Bay

1121 Sonoma Blvd., Vallejo, CA 94590

Pet Types: cats, dogs

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Rescue

30.5 miles

SNAP-Rescue

Concord, CA 94521

Pet Types: dogs

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Shelter

35 miles

East County Animal Shelter

4595 Gleason Drive, Dublin, CA 94568

Pet Types: cats, birds, dogs, rabbits, small animals

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Rescue

37.6 miles

Tri-Valley Animal Rescue

PO Box 11143, Pleasanton, CA 94588

Pet Types: cats, dogs

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Shelter

38.7 miles

Pets In Need, Palo Alto (For the City of Palo Alto)

3281 E. Bayshore Rd., Palo Alto, CA 94303

Pet Types: cats, birds, dogs, farm animals, horses, rabbits, reptiles, small animals

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Rescue

38.7 miles

Silicon Valley Animal Rescue

Palo Alto, CA 94303

Pet Types: dogs

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Rescue

44.9 miles

BAMM Rescue - San Jose, CA Foster

San jose, CA 94088

Pet Types: dogs

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Looking for a specific shelter or rescue?

If you're not seeing what you're looking for, try our shelter and rescue search. We have more than 17,000 organizations in our database with furry pals waiting for a new home!

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

We've got all the info you need on adopting and caring for a Mastiff puppy. Check out the links below for everything you ever wanted to know about Mastiff puppies and adults.

Mastiff basics

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Where do Mastiffs come from? How many types of Mastiffs are there? From the history of the breed to question about average height, weight and size, brush up on these basic facts about the Mastiff.

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