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

Adopt a Mastiff near you in Sunnyvale, California

These Mastiffs are available in Sunnyvale, California.

Dozer

Mastiff

Male, Adult

San jose, CA

Size

(when grown) Med. 26-60 lbs (12-27 kg)

Details

Spayed or Neutered, Shots are up-to-date,

Story

Dozer is a neutered male, black/white Mastiff Hi! I'm Dozer! I am deaf! I really don't know how to play. It’s kind of sad. I have a little routine here - I just go in my pen, eat a few bites, drink then run back out for a treat. I like being near my people & will follow you around. I am not interested in playing ball. I really just don't know what to do with myself other than just enjoy life. I am so sweet, according to my foster. So if you don't mind a good-sized velcro dog, I'm your guy! ##2498995##

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

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

Dozer

Mastiff

Male, Adult

San jose, CA

Size

(when grown) Med. 26-60 lbs (12-27 kg)

Details

Spayed or Neutered, Shots are up-to-date,

Story

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Romeo

Mastiff

Male, 6 yrs 10 mos

Palo Alto, CA

Size

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

Details

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

Story

Romeo is very sweet 6 year old boy but the vets think he may be younger. He would love to be a family dog and definitely wants to find his forever home, but can be protective of his people and his space. That being said once he knows you are part of the family he listens very well and knows many commands, sit, stay, down, shake, wait. He is slow to warm up to new people but once he has been introduced to you he is a gentle giant and big couch potato that loves to cuddle. He also really enjoys going for a ride in the car. It is not recommended to have young kids due to his size. He is good on the leash and knows many commands but needs someone that is not afraid of his size and can properly handle him. Experienced adopter with larger breeds is a must. No other dogs or animals in the household and not a good candidate for crates.

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Lila

Mastiff Mixed Breed (Large)

Female, 2 yrs

Pleasanton, CA

Size

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

Details

Good with dogs,

Story

Let us introduce you to Lila, our resident gentle giant and professional couch potato. This sweet girl is equal parts lover, snuggler, and breeze-catching car ride enthusiast. If you’ve got a couch and a vehicle with windows that roll down halfway, congratulations — you already have two of Lila’s favorite things in life. 🚗💨 When it comes to new people, Lila is a polite little introvert. She might play it cool at first, but don’t worry — she’ll absolutely come in for the classic “hello, may I sniff your hand and accept a gentle pat?” greeting once she’s decided you pass the vibe check. She’s still very much a baby in a big dog body, which means we’re working on things like crate training. Lila wants to be good so badly… but sometimes her baby brain gets a little louder than her manners and she’ll protest with a dramatic whine that can escalate into an Oscar-worthy performance if left unchecked. Consistency is key, and she’s learning quickly! Speaking of learning — this girl is smart. She’s already showing great progress with impulse control. She’s been doing amazingly with my cats (who are basically dog-savvy professionals at this point). If they decide to sprint, her inner “must chase fast thing” instinct kicks in, but a quick “NUH UH” brings her right back to reality. Because of this, any home with small animals will need very slow, thoughtful introductions. Lila is a mastiff mix, which means she’s a big girl with a big heart who needs a confident human to help guide her. She can be a little unsure of herself sometimes, so she benefits from someone willing to help build her confidence and show her that she doesn’t have to be the security team all by herself. With the right leadership, she settles in beautifully. Despite her size, Lila has been an apartment superstar. She’s not the neighborhood alarm system (unlike my husky… who believes every falling leaf deserves commentary). She’ll give a bark if someone knocks on the door, but if she’s crated she settles down quickly. She’s also doing great with potty training, with accidents only happening if I’m gone longer than usual. And so far? No signs of being a secret home renovation specialist. She enjoys her treats and chews but is incredibly polite about them — gentle mouth, happy to trade, and no resource guarding behaviors observed. In summary: ✨ Couch connoisseur ✨ Car ride co-pilot ✨ Sweet, gentle soul ✨ Smart baby still learning the ropes ✨ Looking for a confident human to help her blossom Lila is truly a wonderful dog with so much love to give. She just needs someone ready to guide her, cheer her on, and remind her she’s safe. And in return? You’ll get one very loyal, very cuddly, very adorable best friend. 🐾💕 If you’re looking for a big sweetheart with a goofy baby side, Lila might just be your girl.

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Cricket - ECAS

Mastiff Mixed Breed (Medium)

Female, 4 yrs

Pleasanton, CA

Size

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

Details

Story

Cricket’s Shelter ID# is 88940. She is an approximately 4-year-old, black, Cane Corso mix. She currently weighs around 82 lbs. She has already been vaccinated, microchipped and spayed and is ready to go to her new home! Cricket is located in kennel A-1. Her adoption fee is $35, plus licensing (if applicable), plus the cost of her spay surgery. ** Age shown is an estimate only ** THIS IS A COURTESY POSTING If you are interested, please call the East County Animal Shelter at 925-803-7040 to see if this dog is still available.

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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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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 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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Mastiff puppies and dogs in Sunnyvale, California

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Adopt a Mastiff near you in Sunnyvale, California

These Mastiffs are available in Sunnyvale, California.

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

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

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Sunnyvale, California

Mastiff shelters & rescues in Sunnyvale, California

Looking for a specific shelter or rescue?

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

Mastiff basics

Mastiff basics