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Mastiff puppies and dogs in Pleasanton, California

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

Adopt a Mastiff near you in Pleasanton, California

These Mastiffs are available in Pleasanton, California.
We'll also keep you updated on She-Ra - ECAS's adoption status with email updates.
Photo of She-Ra - ECAS

She-Ra - ECAS

Mastiff Mixed Breed (Medium)

Female, 5 yrs
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
She-Ra 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! Her adoption fee is $35, plus licensing (if applicable), plus the cost of her spay surgery. ☃️ Her adoption fee is waived this month, and her spay surgery has been sponsored! Licensing fee may still apply. 🎁 She-Ra’s Shelter ID# is 88279. She is an approximately 5-year-old, black, Mastiff mix. She currently weighs around 93 lbs. She has already been vaccinated and will be spayed and microchipped before going to her new home. She-Ra is located in kennel C-2. ** 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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We'll also keep you updated on Rex's adoption status with email updates.
Photo of Rex

Rex

Mastiff Mixed Breed (Large)

Male, 1 yr 10 mos
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Meet Rex, our 98-lb gentle giant with a heart just as big as his blocky head. This stunning red Mastiff mix, just under 2 years old and already neutered, is the total package he is calm, polite, intelligent, and just the right amount of goofy. ✨ Why Rex is amazing: • Walks beautifully on leash • Knows “sit” and takes treats with a soft, gentle mouth • Affectionate once he warms up • Loves walks, lounging, and hanging with his people • May be cat workable with slow and proper intros 🐱❤️ In playgroups, Rex enjoys gentle play with both male and female dogs who don’t mind his big-dog enthusiasm. He thrives in a calm, structured home without too much chaos just a loving person or family who sees what a treasure he is. Neutered| 2 yrs old | 98 lbs | Mastiff Mix

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We'll also keep you updated on May May - ECAS's adoption status with email updates.
Photo of May May - ECAS

May May - ECAS

Mastiff Mixed Breed (Medium)

Female, 6 yrs
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
May May was brought to our shelter on 11/22/25 after being found in Castro Valley. She hasn't been reclaimed by her previous person, so she's now looking for a new home! Her adoption fee is $35, plus licensing (if applicable). The cost of her spay surgery is sponsored! ☃️ Her adoption fee is waived this month, but adopter is responsible for the cost of her spay surgery. Licensing fee may still apply. 🎁 ## See video of May May at the end of the photo gallery! ## TVAR.org/find-your-pet-adopt/dogs-puppies/ May May’s Shelter ID# is 88332. She is an approximately 6-year-old, black, Mastiff mix. She currently weighs around 80 lbs. She has already been vaccinated and microchipped and will be spayed before going to her new home. May May is located in kennel B-5 ** 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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We'll also keep you updated on She-Ra's adoption status with email updates.
Photo of She-Ra

She-Ra

Mastiff

Female, 5 yrs
Dublin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Shots are up-to-date,
Story
She-Ra is a female Mastiff. She is approximately five years old, and currently weighs 93 pounds. 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, and will be spayed and micro-chipped before going to her new home. Her adoption fee is waived this month and her spay surgery will be sponsored too! A dog licensing fee may still apply.

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

May May

Mastiff

Female, 6 yrs
Dublin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Shots are up-to-date,
Story
May May is a female Mastiff. She is approximately six years old, and currently weighs 80 pounds. She was brought to our shelter on 11/22/25 after being found in Castro Valley. She hasn't been reclaimed by her previous person, so she's now looking for a new home! She has been vaccinated, is micro-chipped, and will be spayed before going to her new home. Her adoption fee is waived this month, but her adopter will responsible for the cost of her spay surgery. A dog licensing fee may still apply.

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

These Mastiffs are available for adoption close to Pleasanton, California.
We'll also keep you updated on She-Ra - ECAS's adoption status with email updates.
Photo of She-Ra - ECAS

She-Ra - ECAS

Mastiff Mixed Breed (Medium)

Female, 5 yrs
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
She-Ra 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! Her adoption fee is $35, plus licensing (if applicable), plus the cost of her spay surgery. ☃️ Her adoption fee is waived this month, and her spay surgery has been sponsored! Licensing fee may still apply. 🎁 She-Ra’s Shelter ID# is 88279. She is an approximately 5-year-old, black, Mastiff mix. She currently weighs around 93 lbs. She has already been vaccinated and will be spayed and microchipped before going to her new home. She-Ra is located in kennel C-2. ** 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.

Learn More

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

Rex

Mastiff Mixed Breed (Large)

Male, 1 yr 10 mos
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Meet Rex, our 98-lb gentle giant with a heart just as big as his blocky head. This stunning red Mastiff mix, just under 2 years old and already neutered, is the total package he is calm, polite, intelligent, and just the right amount of goofy. ✨ Why Rex is amazing: • Walks beautifully on leash • Knows “sit” and takes treats with a soft, gentle mouth • Affectionate once he warms up • Loves walks, lounging, and hanging with his people • May be cat workable with slow and proper intros 🐱❤️ In playgroups, Rex enjoys gentle play with both male and female dogs who don’t mind his big-dog enthusiasm. He thrives in a calm, structured home without too much chaos just a loving person or family who sees what a treasure he is. Neutered| 2 yrs old | 98 lbs | Mastiff Mix

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We'll also keep you updated on May May - ECAS's adoption status with email updates.
Photo of May May - ECAS

May May - ECAS

Mastiff Mixed Breed (Medium)

Female, 6 yrs
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
May May was brought to our shelter on 11/22/25 after being found in Castro Valley. She hasn't been reclaimed by her previous person, so she's now looking for a new home! Her adoption fee is $35, plus licensing (if applicable). The cost of her spay surgery is sponsored! ☃️ Her adoption fee is waived this month, but adopter is responsible for the cost of her spay surgery. Licensing fee may still apply. 🎁 ## See video of May May at the end of the photo gallery! ## TVAR.org/find-your-pet-adopt/dogs-puppies/ May May’s Shelter ID# is 88332. She is an approximately 6-year-old, black, Mastiff mix. She currently weighs around 80 lbs. She has already been vaccinated and microchipped and will be spayed before going to her new home. May May is located in kennel B-5 ** 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.

Learn More

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We'll also keep you updated on She-Ra's adoption status with email updates.
Photo of She-Ra

She-Ra

Mastiff

Female, 5 yrs
Dublin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Shots are up-to-date,
Story
She-Ra is a female Mastiff. She is approximately five years old, and currently weighs 93 pounds. 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, and will be spayed and micro-chipped before going to her new home. Her adoption fee is waived this month and her spay surgery will be sponsored too! A dog licensing fee may still apply.

Learn More

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

May May

Mastiff

Female, 6 yrs
Dublin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Shots are up-to-date,
Story
May May is a female Mastiff. She is approximately six years old, and currently weighs 80 pounds. She was brought to our shelter on 11/22/25 after being found in Castro Valley. She hasn't been reclaimed by her previous person, so she's now looking for a new home! She has been vaccinated, is micro-chipped, and will be spayed before going to her new home. Her adoption fee is waived this month, but her adopter will responsible for the cost of her spay surgery. A dog licensing fee may still apply.

Learn More

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

Magician

Mastiff

Male, Adult
Oakland, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Declawed,
Story
I am at Oakland Animal Services in kennel Dog C:5December 25, 2025, 2:07 pm

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These pups are in Pleasanton, California too!

Below are our newest added Mastiffs available for adoption in Pleasanton, California. To see more adoptable Mastiffs in Pleasanton, California, use the search tool below to enter specific criteria!
We'll also keep you updated on Ophelia's adoption status with email updates.
Photo of Ophelia

Ophelia

Bullmastiff Mixed Breed (Large)

Female, 3 yrs 3 mos
Pleasanton, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered,
Story
🌸 Meet Ophelia — The Softest Goofball You’ll Ever Love! 🌸 If gentle souls came in dog form, they’d look exactly like Ophelia. This sweet, slightly clumsy beauty is all heart, all softness, and all about the snacks. Ophelia is a certified Pet Acceptance Professional — head, belly, booty, you name it, she’ll happily accept all pets with a look of pure bliss. And while toys aren’t really her thing yet, she did proudly grab a bone today and parade it outside like she unlocked a new life achievement. She’s quiet as a cloud, content to snooze while the humans handle all the boring stuff. But don’t be fooled — when she gets excited (usually for food because… same), she does the cutest tiny spins that will melt you instantly. Ophelia’s crate manners? Immaculate. She settles in quietly, especially now that her crate is in the action zone where she can keep tabs on her people. She’ll head to the door when she needs to go out and knows grass is for potty breaks — a polite queen! 👑 She loves lounging in the backyard, isn’t phased by vacuums, blenders, or even surprise LOUD construction — apparently nothing can interrupt her chill. She knows some basic commands and is eager (and treat-motivated 👀) to learn more. She’s a wonderful mix of silly and sweet, with just a sprinkle of clumsy charm. The only thing she’s still figuring out? Leash world. Walks can make her a bit nervous right now, but she’s settling in and learning that the world outside isn’t so scary. With patience and gentle guidance, she’ll get there. If you’re looking for a soft, sweet, silly girl who wants nothing more than to be loved, fed treats, and nap while you live your human life… Ophelia is your girl. 💕 Ready to meet her? She’s ready for you.

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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 Pleasanton, California.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Pleasanton, California

Bullmastiffs in Pleasanton, California Neapolitan Mastiffs in Pleasanton, California Saint Bernards in Pleasanton, California

Mastiff shelters & rescues in Pleasanton, California

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

Here are a few organizations closest to you:

Rescue

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California Bully Rescue

Pleasanton, CA 94588

Pet Types: dogs

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Rescue

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Tri-Valley Animal Rescue

PO Box 11143, Pleasanton, CA 94588

Pet Types: cats, dogs

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Shelter

2.8 miles

East County Animal Shelter

4595 Gleason Drive, Dublin, CA 94568

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

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Shelter

18.8 miles

Oakland Animal Services

1101 29th Ave, Oakland, CA 94601

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

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Rescue

20.5 miles

Silicon Valley Animal Rescue

Palo Alto, CA 94303

Pet Types: dogs

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Rescue

21.8 miles

BAMM Rescue - San Jose, CA Foster

San jose, CA 94088

Pet Types: dogs

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Shelter

26 miles

Contra Costa Animal Services Martinez

4800 Imhoff Place, Martinez, CA 94553

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

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Shelter

35 miles

Humane Society of the North Bay

1121 Sonoma Blvd., Vallejo, CA 94590

Pet Types: cats, dogs

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Shelter

35.1 miles

City of Stockton Animal Shelter

1575 S. LINCOLN ST, STOCKTON, CA 95206

Pet Types: cats, dogs, rabbits

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Shelter

42.2 miles

Ripon Animal Service

444 Doak Blvd, Ripon, CA 95366

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

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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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