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

Adopt a Mastiff near you in Oceanside, 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 Oceanside, California

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

Priscillo

Mastiff

Male, Adult

Escondido, CA

Size

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

Details

Spayed or Neutered,

Story

How this pet arrived: This pet was brought in by a community member on 2/12/26. Why this pet is the one for you:Priscillo is a sweet and sensitive dog who is still learning that the world can be a safe and kind place. He can be fearful when it comes to handling and new situations, so he needs a little extra time and understanding as he gets comfortable. While he may seem shy at first, Priscillo has a soft and loving personality that begins to shine once he feels secure.Meeting new people and exploring unfamiliar environments can be overwhelming for Priscillo. Because of this, he does best when introductions are slow and calm. With patience, gentle encouragement, and consistency, he gradually warms up and begins to show his affectionate and loyal nature. At SDHS:This pet has been vaccinated, microchipped and spayed neutered. This pet is now ready for their new home! Primary Color: Black Brindle Weight: 74 Age: 2yrs 1mths 3wks

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Skadi

Mastiff

Female, Adult

Escondido, CA

Size

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

Details

Spayed or Neutered,

Story

How Skadi arrived: Skadi was brought in by their previous owner on March 15th. Why Skadi is the one for you:Skadi is a beautiful gentle giant with a heart just as big as her size. Though she may be a little shy when you first meet her, it doesn't take long for her sweet and loving nature to shine through. She's calm, patient, and wonderfully gentle, making her a great companion for kids who can appreciate her soft and easygoing personality. Skadi thrives in a low-energy home where she can feel safe and relaxed, and she would do best as the only dog or with another very calm, laid-back companion. Once she bonds with you, Skadi will fill your days with quiet affection, loyal companionship, and the kind of warmth only a truly special dog can give. At SDHS:Skadi has been vaccinated, microchipped and spayed. Skadi is now ready for their new home! Primary Color: Tan Weight: 103 Age: 3yrs 1mths 4wks

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Octavia

English Mastiff

Female, 6 yrs 11 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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Buttercup

Mastiff Belgian Malinois

Female, 1 yr 5 mos

Temecula, CA

Size

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

Details

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

Story

Meet Buttercup – The Smart, Alert, and Sweet Girl Ready for Her Forever Home Her head tilt is her signature move! As if to say, "Are you saying I am yours?" Buttercup is the perfect mix of intelligence, curiosity, and sweetness! Born on 10/26/24, this Mastiff and Malinois mix is always alert and eager to learn, making her a great fit for an active home that will nurture her sharp mind. While she’s incredibly smart, Buttercup also has a gentle and loving side—she enjoys affection, playtime, and bonding with her humans. Like her littermates, she’s been with a trainer, well-socialized and potty trained, giving her a great foundation to thrive in her future home. Up to date on vaccines Intelligent, curious, and affectionate Crate trained and potty trained If you’re looking for a smart and loving pup who will be your loyal companion, Buttercup is your girl! Apply to adopt or foster today—don’t forget to mention Buttercup’s name! Professionally trained in basics (sit, stay, walking on leash, etc) Foster-to-adopt option available Got inquiries about Buttercup? Click here to fill out our inquiry form (this is not an application): https://petstablished.com/petlover/general_form/71282 ##2313586##

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Tiger

Mastiff Belgian Malinois

Male, 1 yr 5 mos

Temecula, 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 Tiger – The Confident Leader with a Heart of Gold! I'm currently in California. My bags are packed, I’m ready to travel to my new home. Where are you? Are you my new family? I’ll travel to you! Tiger is ready to lead his way into your heart! Born on 10/26/24, this sweet Mastiff and Malinois mix is a natural leader —confident and curious. But don’t let his strong presence fool you—he’s also incredibly lovable, affectionate, and eager to bond with his humans. Tiger is a well-rounded boy who enjoys both playtime and cuddles. He’s been well-socialized and is potty trained, making him a great addition to a loving home. Whether he’s leading the charge on a new adventure or snuggling up for some quality time, Tiger is the perfect balance of strength and sweetness. Up to date on vaccines Confident, affectionate, and a great companion Crate trained and potty trained Professionally trained in basics (sit, stay, walking on leash, etc) Foster-to-adopt option available If you’re looking for a brave, smart, and loving boy to be your loyal companion, Tiger is your perfect match! Apply to adopt or foster today—don’t forget to mention Tiger’s name! ##2313590##

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Toothless

Mastiff Belgian Malinois

Male, 1 yr 5 mos

Temecula, CA

Size

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

Details

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

Story

Meet Toothless – The Energetic, Goofy, and Strong Boy Ready for Adventure! I'm currently in California. My bags are packed, I’m ready to travel to my new home. Where are you? Are you my new family? I’ll travel to you! Toothless has a personality as big as his playful heart! Born on 10/26/24, this sweet Mastiff and Malinois mix is bursting with energy, always ready to zoom around and explore the world with his goofy charm. He’s strong, confident, and full of fun, making him the perfect pup for an active household. Toothless is not just about high energy—he’s also a sweetheart who loves affection and human connection. Well-socialized, crate trained and potty trained, he’s a smart boy who will thrive in a home that gives him structure, love, and lots of playtime. Toothless is great on outings - check out his photos. Up to date on vaccines Playful, strong, and always ready for fun Crate trained and potty trained Professionally trained in basics (sit, stay, walking on leash, etc) Foster-to-adopt option available If you’re looking for a goofy, adventurous, and lovable boy to keep you on your toes, Toothless is your guy! Apply to adopt or foster today—don’t forget to mention Toothless’ name! ##2313604##

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These pups are in Oceanside, California too!

Below are our newest added Mastiffs available for adoption in Oceanside, California. To see more adoptable Mastiffs in Oceanside, California, use the search tool below to enter specific criteria!

Fiona

Neapolitan Mastiff

Female, Adult

Riverside, CA

Size

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

Details

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

Story

Meet Fiona 💕 Fiona is a beautiful Neapolitan Mastiff estimated to be around 3 years old. It’s very clear that she was used extensively for breeding before coming to us, and despite everything she’s been through, she is nothing short of incredible. She is incredibly sweet, gentle, and affectionate. Fiona has a playful side but is overall a super chill, easygoing girl who truly loves the simple things like cuddling, belly rubs, and being close to her people. She has the kindest soul and a very soft presence. Fiona is non-reactive and tolerant around other dogs, but she would do best as the only dog in the home. Due to the heavy facial folds common in her breed, her vision is not the best, so fast-moving dogs, especially during playful moments can sometimes startle her. She does have severe hip dysplasia, likely a result of being bred repeatedly, and she will need a home that understands and can manage her orthopedic needs. When Fiona arrived, she was very underweight, but with proper care and nutrition, she is slowly and steadily putting healthy weight back on. We are looking for a home with mastiff or giant breed experience, someone who understands her structure, limitations, and the special care she deserves. One of the sweetest things about Fiona? Sometimes she sings and it is absolutely adorable. Fiona has so much love to give and deserves a calm, understanding home where she can finally just be a dog, loved, safe, and cherished by her humans. If interested in meeting Fiona, please apply on our website today! https://www.underdogheroes.org/applytoadopt

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Clifford

Bullmastiff

Male, Adult

Oceanside, CA

Size

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

Details

Spayed or Neutered,

Story

How this pet arrived: Clifford was brought in by a community member on January 30, 2026. Why this pet is the one for you:Meet Clifford - a big dog with an even bigger heart! True to his name, Clifford is a gentle giant who is ready to fill your life with joy and adventure. Clifford absolutely loves running around and staying active. Whether it is chasing after his favorite balls or splashing around and playing in the water, he is always up for some fun! When he isn't busy playing, Clifford is a master of relaxation. He loves nothing more than basking in the warm sun and soaking up the rays. He has a soft, sensitive nature and truly thrives on gentle petting and quiet moments of affection with his favorite humans. He can sometimes have "big feelings" and feel a little unsure around new people, especially men, so he's looking for a patient family who will proudly advocate for his space. With calm introductions and a bit of time, his trust and confidence start to shine. Because of his size and sensitive soul, he is best suited for a home with children aged 8 and up who can respect his boundaries. He is ready to grow something truly special with you: a lifetime of trust, confidence, and love. Bring the whole family in to meet him today! Shy/Fearful Dog: Clifford requires a virtual behavior consult, please watch THIS video to learn more about him. Primary Color: Red Weight: 130 Age: 2yrs 0mths 1wks

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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Oceanside, California.

Mastiff puppies and dogs in Oceanside, California

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Adopt a Mastiff near you in Oceanside, 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 Oceanside, California

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

These pups are in Oceanside, California too!

Below are our newest added Mastiffs available for adoption in Oceanside, California. To see more adoptable Mastiffs in Oceanside, California, use the search tool below to enter specific criteria!

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Mastiff puppies and dogs in nearby cities

Related breeds in Oceanside, California

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Mastiff basics

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Mastiff puppies and dogs in Oceanside, California

Learn More:

Adopt a Mastiff near you in Oceanside, 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 Oceanside, California

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

These pups are in Oceanside, California too!

Below are our newest added Mastiffs available for adoption in Oceanside, California. To see more adoptable Mastiffs in Oceanside, California, use the search tool below to enter specific criteria!

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