Mastiff Adoption in Mill Valley, CA: Mastiff Puppies for Sale in Mill Valley, CA

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.

Leo

Mastiff American Pit Bull Terrier

Male, Adult

San Francisco, CA

Size

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

Details

Not good with kids, Good with dogs, Not good with cats, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Meet Leo – A Loyal, Intelligent Dog Looking for the Right EnvironmentLeo is a loyal, intelligent dog who bonds deeply with his people and thrives in a calm, structured environment. He is highly trainable, eager to please, and enjoys working with his handlers.Adopted in 2022, Leo has a history of trauma that can make him fearful and reactive. We’ve worked extensively with trainers and the SF SPCA Behavior Program, and he has made meaningful progress. He gets along well with other dogs and has strong obedience skills.Leo does have a bite history and needs an experienced, adult-only home. His fear can escalate quickly, so he requires someone comfortable managing reactive behavior. He is muzzle-trained and does well with structure.We love Leo deeply and are committed to finding him a safe, understanding home where he can truly thrive. Behavioral records available.Rehoming fee applies to ensure a serious, committed placement—may be waived for the right home.

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PENNY

Mastiff

Female, 2 yrs 4 mos

Alameda, CA

Size

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

Details

Spayed or Neutered,

Story

• Loves affection• Playful, great to walk• Super splasherPenny arrived to us unsure of the world, but has since decided that after careful consideration, the world is actually pretty great!She is gorgeous, gentle, and sweeter than she probably wants you to know. Once she`s comfortable with you, her whole personality opens up: she`s easy to train, takes fetch extremely seriously, and in what may be the best discovery of her to date - she LOVES water. She`s a big fan of splashing around and throwing her tennis balls in. Penny is ready for a patient, loving home that can keep her playtime up and thriving. If you`re looking for a beautiful, big hearted, playful pup - she`s right here!

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Adam

Mastiff Mixed Breed (Medium)

Male, 2 yrs 4 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, 8 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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FRED MEYER

Mastiff

Male, 6 yrs

Martinez, CA

Size

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

Details

Story

Fred Meyer is a fun-loving, energetic guy who loves people, playtime, and anything that keeps him engaged. He’s a happy, social dog who enjoys toys, treats, and spending time with his humans. Fred Meyer’s enthusiasm for life is contagious, and he’ll thrive with a family who can provide him with plenty of enrichment, training, and opportunities to put his playful personality to work.

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Olaf

Mastiff

Male, Adult

Vallejo, CA

Size

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

Details

Spayed or Neutered,

Story

IMPORTANT NOTES! PLEASE READ:1. We may not receive anything via forms submitted through PetFinder or Adopt-A-Pet!2. Please submit the adoption interest application directly at our HSNB website!https://www.hsnb.org/dog-adoption-application3. If you do not receive the automated confirmation from us, email adoptions@hsnb.org -----Olaf - A Loyal Companion with a Big Heart 🤍🐾If you appreciate the depth and devotion of a large breed dog, Olaf might be your perfect match. This handsome 3½-year-old grey Mastiff weighs about 95 pounds and is looking for an experienced handler who understands and respects the unique needs of a powerful breed.When Olaf is in his comfort zone, his steady and affectionate nature truly shines. Staff have been incredibly impressed with his beautiful leash manners-he walks nicely and calmly, making outdoor time a pleasure. He is a loyal, sweet companion who thrives on routine and enjoys relaxing right by your side.Because of his size and protective instincts, Olaf requires an adult-only home with no children or cats. He is looking for a savvy, large-breed-experienced adopter who can provide consistent structure and leadership. Olaf has shown some selective reactivity in his foster home, particularly around men, and will need a patient, structured decompression period. An ideal home would be one with a confident, primary female handler or a household experienced in managing breed-specific boundary setting.With the right guidance and a dedicated owner who understands his signals, Olaf has the potential to be an incredibly devoted partner. He is big in size, deep in loyalty, and ready to find the structured, loving home he deserves. 🐶Adoption fee: $300 Primary Color: Grey Weight: 95 Age: 4yrs 0mths 1wks

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Mastiff puppies and dogs in Mill Valley, California

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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.

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Mill Valley, California

Mastiff shelters & rescues in Mill Valley, California

Looking for a specific shelter or rescue?

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

Mastiff basics

Mastiff basics