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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.
Photo of Theo

Theo

Mastiff

Male, Young
Oakland, CA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Theo was found as a stray. I got him as an emergency foster and he’s been such an easy to train, loving, timid boy. Shy at first and will hide until he knows the coast is clear, once ready to say hello he is goofy. He moves very slowly and hardly makes a sound around the house. If he sees or hears something suspicious he gives a deep, gentle bark to let you know. When it’s dinner time you get to see how he bucks like a bronco before he sits politely and waits for the, ok, to eat. At 2 years old and 116lbs he still has a bit of growing to do. He has had absolutely no issues in the last year I’ve had him. He gets along with all the dogs and lets you bath him and clip his nails with no fuss. Large breeds like him take longer to mature so even though he is technically an adult, he’s still a big baby that needs guidance to build confidence. Looking for a perfect home should be easy. He loves cuddles, treats, and going out for ‘sniffaris’

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Superstar

Mastiff

Male, Young
Oakland, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Declawed, Spayed or Neutered,
Story
I am at Oakland Animal Services in kennel Dog I:3March 3, 2025, 11:40 pm

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Photo of Atticus

Atticus

Mastiff

Male, Young
Burlingame, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered, Shots are up-to-date,
Story
AVAILABLE BY APPOINTMENT! Hi there, my name is Atticus and I'm a 9-month-old, neutered mastiff mix that currently weighs about 54lbs. I'm still a growing boy and will be around 70lbs as and adult. I'm a sweet and friendly guy that likes to ponder life's big questions. Where do the treats come from? Will I be the bestest boy? How many naps can one take in a day? I hope to answer all of my questions in my new home. I'm a food motivated pup that loves to learn. I'm currently working on impulse control, so I'm hoping for a family that's prepared to continue my training. I hope to find a family that is able to philosophize with me. For more information, just ask Customer Service about Atticus! ID# A957791  Since I’m not at the adoption center, you can make arrangements to meet me by submitting your fully completed Adoption Profile Form to adoptinquire@peninsulahumanesociety.org and a staff member will call you to conduct a phone interview before making an appointment to meet me in person. You must be 18 or older to submit a profile.  Application: https://phs-spca.org/wp-content/uploads/2023/04/AdoptionProfiles_dog2023_fillin.pdf *The application may not work on mobile devices and iPads. Please call (650) 340-7022 for assistance. Unless otherwise indicated, adoptable animals are located at our Lantos Center for Compassion at 1450 Rollins Road, Burlingame, CA 94010.  You may call us at 650-340-7022 to schedule an appointment, or just drop by. Drop-In hours for Same Day Adoptions are 11 am – 5 pm, 7 days a week (closed major holidays). We do our best to update our listings regularly, but we can’t guarantee every animal you see is still available. It’s also typical for us to have animals who haven’t had their photos taken yet, so you are welcome to visit our adoption center and have a look around! To check on an animal's adoption status, please call 650-340-7022 during normal business hours to speak with an adoption counselor. Emails will be returned as soon as possible, but please allow up to 48 hours during busy adoption periods like weekends.March 5, 2025, 9:06 pm

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Photo of Kylo

Kylo

Mastiff German Shepherd Dog

Male, Young
Walnut Creek, CA
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Spayed or Neutered,
Story
Kylo is a playful and affectionate young boy who loves spending time with his humans! He's very friendly and enjoys being the center of attention, making him a great companion for active families. This heart of gold loves playing outdoors, is very intelligent and social with other dogs. Primary Color: Black Secondary Color: Brown Weight: 78 Age: 1yrs 6mths 0wks

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Photo of Sky

Sky

Mastiff

Female, 8 yrs
Petaluma, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Sky is a sweet, gentle, 8-year-old Mastiff mix who was found as a stray in Tehama County and spent 2 months in their shelter. We are so glad she found her way to Lily’s Legacy. Sky loves to romp the property where she is being fostered followed by a nice long nap. She is adorable as she shows you her sit, shake and down follow by a “please rub my belly”. She also loves to play with stuffies and balls, and is learning the ins and outs of fetch. You will often find her with her favorite toy in her mouth which she will proudly show you. Sky lives with 4 other dogs in her foster home – 2 young, and 2 seniors. She is gentle and respectful with the seniors and keeps up with the energy of the young ones. We don’t know how she feels about cats. ​ Sky sleeps soundly through the night and is proving to be a wonderful houseguest. Her soft beautiful brindle fur and big soft squishy nose make her a wonderful cuddle buddy too. Unfortunately, she tested positive for heartworm so will be going through treatment over the next couple months. The good news is that the heartworm was diagnosed early, so we expect her to make a full recovery. Sky is doing very well in her foster home where she is getting lots of attention and TLC.

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Photo of Tango

Tango

Mastiff Black Mouth Cur

Male, Adult
Santa Rosa, CA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Spayed or Neutered,
Story
Tango is an 83lb goof ball who is looking for an active home to match his exuberant personality! This big Mastiff mix is super food-motivated, making training sessions both fun and productive. He's eager to learn, so continued training will help him shine even more. Tango would thrive in a home that can keep up with his playful spirit and give him plenty of opportunities for exercise and adventures. If you're looking for a loyal, fun-loving companion who's ready to join in on the action, Tango is your guy! Call 707-542-0882 to meet Tango. Primary Color: Fawn Secondary Color: Black Weight: 41 Age: 2yrs 2mths 3wks

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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

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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:

Shelter

18.9 miles

Oakland Animal Services

1101 29th Ave, Oakland, CA 94601

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

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Shelter

25 miles

Peninsula Humane Society & SPCA

1450 Rollins Road, Burlingame, CA 94010

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

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Rescue

27 miles

Joybound People and Pets

2890 Mitchell Drive, Walnut Creek, CA 94598

Pet Types: cats, dogs

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Rescue

30 miles

Lily's Legacy Senior Dog Sanctuary

PO Box 751002, Petaluma, CA 94975

Pet Types: dogs

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Shelter

36.9 miles

Humane Society of Sonoma County

5345 Hwy 12 West, Santa Rosa, CA 95407

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

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Shelter

38 miles

Solano County Animal Care Services

2510 Clay Bank Rd., Fairfield, CA 94533

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

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Rescue

47.4 miles

Wine Country Animal Lovers

PO Box 3, Calistoga, CA 94515

Pet Types: cats, 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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