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

Adopt a Mastiff near you in Oceanside, California

These Mastiffs are available in Oceanside, California.

Peewee

Shepherd (Unknown Type) Mastiff

Male, Adult

Oceanside, CA

Size

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

Details

Spayed or Neutered,

Story

How this pet arrived: Pewee was brought in by a community member on September 10, 2026.Why this pet is the one for you:Say hello to Peewee! Peewee is a total sweetheart with a fun, playful side that really comes out once he feels comfortable. He just likes to take things slow at first. Stepping into new environments isn't his favorite thing in the world, so he's hoping for a patient family that can give him a quiet, low-key start and let him settle in at his own pace. A gentle, calm approach goes a long way with Peewee. Once he knows he's safe, his silly, loving personality quickly takes over. He is looking for a calm, consistent home where he can truly relax and find his groove. Peewee may prefer being your one-and-only dog, but he's open to canine siblings if you bring your pup in for a meet-and-greet first to see if they click. Any kids in the home should be 8 or older, and all household members will need to come along to meet him-he definitely wants to make sure everyone passes the vibe check! Come on by to meet this silly boy!At SDHS:Pewee has been vaccinated, microchipped and neutered. He is now ready for his new home! Primary Color: Brown Secondary Color: Black Weight: 73 Age: 2yrs 0mths 3wks

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

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

Urgent! Please Save Me

Mastiff American Pit Bull Terrier

Male, 6 yrs 1 mo

San Marcos, CA

Size

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

Details

Good with dogs, Spayed or Neutered, Shots are up-to-date,

Story

WE ARE COURTESY POSTING THIS DOG FOR THE MORENO VALLEY ANIMAL SHELTER TO HELP THEM FIND A HOME. The shelter is severely overcrowded and desperately needs help finding adopters. Dogs are being turned in higher numbers than the shelter can accommodate; therefore, many are losing their lives simply due to a lack of cage space. We are helping get the word out about their immediate need. Please save this deserving pooch and clear a kennel for another dog in need today! This beautiful dog is located in the Moreno Valley shelter. Shelter needs to clear kennels. They are over capacity and all available dogs are in urgent need. Please visit or email the shelter directly to adopt. CANNOLI - ID#A553312 Shelter staff named me CANNOLI and I am a neutered male, black brindle and white Pit Bull Terrier mix. The shelter thinks I am about 6 years old. I weigh approximately 71.60 lbs. SEE MORE VIDEOS AND PHOTOS HERE: https://myalbum.com/album/5txGx8T3aVLmWV/ STAFF NOTES: * Cannoli knows sit * Cannoli loves to play in water spray * Cannoli enjoys being brushed * Cannoli is a gentle boy * Cannoli did well on his temperament tests with a female Cane Corso and a female Belgian Malinois Moreno Valley Animal Shelter 14041 Elsworth Street, Moreno Valley, CA 92553 951-413-3790 Adoption hours: Tuesday - Friday 10 am - 5 pm Saturday 10:30 am - 3:30 pm Closed Sunday-Monday and Holidays

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Urgent! Please Save Me

Mastiff

Female, 1 yr 2 mos

San Marcos, CA

Size

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

Details

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

Story

WE ARE COURTESY POSTING THIS DOG FOR THE MORENO VALLEY ANIMAL SHELTER TO HELP THEM FIND A HOME. The shelter is severely overcrowded and desperately needs help finding adopters. Dogs are being turned in higher numbers than the shelter can accommodate; therefore, many are losing their lives simply due to a lack of cage space. We are helping get the word out about their immediate need. Please save this deserving pooch and clear a kennel for another dog in need today! This beautiful dog is located in the Moreno Valley shelter. Shelter needs to clear kennels. They are over capacity and all available dogs are in urgent need. Please visit or email the shelter directly to adopt. Shelter staff named me KITTY and I am a spayed female, black and white Mastiff mix. The shelter thinks I am about 1 year and 1 month old. I weigh approximately 57.40 lbs. SEE MORE VIDEOS AND PHOTOS HERE: https://myalbum.com/album/Zo2f73L8VrfUkV/ STAFF NOTES: * Kitty knows sit * Kitty takes treats gently * Kitty loves ear rubs * Kitty gives hugs * Kitty did okay on her temperament test with a neutered German Shepherd Moreno Valley Animal Shelter 14041 Elsworth Street, Moreno Valley, CA 92553 951-413-3790 Adoption hours: Tuesday - Friday 10 am - 5 pm Saturday 10:30 am - 3:30 pm Closed Sunday-Monday and Holidays

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Princess

Mastiff

Female, 10 yrs 8 mos

San Diego, CA

Size

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

Details

Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Meet Princess Princess is a 10-year-old, 103-pound Pitbull whose life story will break your heart — and then completely inspire you. She was living on the streets, used for multiple litters, and found covered in massive tumors with a severe skin infection. Despite everything she endured, her spirit never broke. Since coming into rescue, her tumors have been surgically removed, she has been spayed, microchipped, vaccinated, placed on flea control, and her skin has beautifully healed. And through it all… she has remained the sweetest soul on the planet. Princess is incredibly gentle and loving. She is wonderful with puppies, cats, big dogs, and little dogs. For a 103-pound girl, she has the softest heart and the calmest presence. She simply wants comfort, safety, and someone to love her the way she has always deserved. After a lifetime of hardship, Princess is finally ready for her happily ever after. If you would like to meet this extraordinary girl, please fill out an application at: www.secondleashonlife.org Princess has survived everything. Now she just needs someone to choose her. ##2665693##

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Octavia

English Mastiff

Female, 7 yrs 5 mos

San Diego, CA

Size

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

Details

Good with kids, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Meet Octavia also called Tavi. Octavia is a big girl with an even bigger heart. Since being rescued from the shelter, she’s proven herself to be the perfect houseguest—gentle, loving, and so grateful for a second chance. Affectionately known as Tavi, she’s ready to leave her past behind and find a forever home where she can truly shine. She just needs someone to give her that chance… and we know she’ll give a lifetime of love in return. Due to Tavi's neglect, she had a severe eye infection when we rescued her from the shelter on the euth list. Unfortunately, we were unable to save her eye but that doesn't stop her one bit! ##2688495##

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Tiger

Mastiff Belgian Malinois

Male, 1 yr 11 mos

Temecula, CA

Size

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

Details

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

Story

Hi, I’m Tiger! I’m the perfect mix of sweet, friendly, and ready-for-anything energy. I’m a young guy who loves staying active, and I’m looking for a family who wants a dog to actually do life with. Walks, exploring, playtime, adventures. I’m ready to go! Are you the active family I’ve been waiting for? I’d love people who will give me plenty of opportunities to move, learn, have fun, and then enjoy being part of the family at the end of the day. I’m currently in California, but I’m ready for my next adventure to take me home. If you’re looking for a sweet, energetic boy who’s ready to experience everything life has to offer, I might be your Tiger! ##2313590##

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Toothless

Mastiff Belgian Malinois

Male, 1 yr 11 mos

Temecula, CA

Size

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

Details

Good with kids, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Hi, I’m Toothless! I’m a young Mastiff/Belgian Malinois mix currently in California, but I’m ready to travel when my forever family finds me. I’m sweet, confident, energetic, and just goofy enough to make sure life with me is never boring. I’m the kind of guy who likes having things to do. Walks? Absolutely. Adventures? I’m in. Training? My brain is ready. Sitting around wondering why you haven’t thrown the toy yet? Also one of my specialties. I’m crate-trained, potty-trained, and already know some basic commands, so I’ve got a great start under my belt. With my Mastiff muscles and Malinois brain, I’m looking for a family who understands that exercise, structure, and continued training will help me be my best self. Give me somewhere to put all that energy and intelligence, and I’ll give you one fun, loyal companion who is always ready for whatever we’re doing next. I’m ready to find my people, pack my bags, and start the good part of my story. California is nice and all, but where are we going next? ##2313604##

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Mastiff puppies and dogs in Oceanside, California

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Adopt a Mastiff near you in Oceanside, California

These Mastiffs are available in Oceanside, California.

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

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

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Oceanside, California

Mastiff shelters & rescues in Oceanside, California

Looking for a specific shelter or rescue?

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

Mastiff basics

Mastiff basics