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.

Merlin

Mastiff

Male, 4 yrs 6 mos

Riverside, CA

Size

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

Details

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

Story

Meet Merlin At approximately five years old, Merlin is a truly one-of-a-kind companion—a powerful yet loving blend of five different mastiff breeds. With his strong build, deep loyalty, and natural protectiveness, Merlin is the kind of dog who bonds deeply with his people and takes his job as a guardian seriously. Merlin thrives in a calm, stable home with an experienced owner who understands the unique traits of guardian breeds. While he is naturally protective, with the right slow and structured introductions, he can learn to accept new people. He would do best in a home without children and in an environment with minimal hustle and bustle—he’s not the kind of dog who enjoys a constantly changing scene. Despite his strength, Merlin has a gentle side, especially with dogs he knows. He enjoys the company of other dogs but needs low-energy canine friends due to a past orthopedic injury—so no roughhousing or hyper play. Instead, he loves calm companionship, leisurely walks, and simply being near his people. Merlin’s perfect adopter will be someone who appreciates his intelligence, independence, and loyalty, and who can provide the structure, leadership, and love he needs to thrive. If you’re looking for a faithful protector and devoted best friend, Merlin may be the dog for you! If interested in learning more about this dog & setting up a potential meet & greet, please fill out our adoption application. https://www.underdogheroes.org/applytoadopt

Learn More

Hannah

Mastiff American Pit Bull Terrier

Female, Adult

Riverside, 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

COURTESY POST Hannah’s journey hasn’t been an easy one. She found herself scared and just days away from giving birth at one of California’s toughest high-kill shelters, where she and her 10 puppies were placed on the euthanasia list. But Real Good Rescue and two amazing rescue partners came together to save this brave mama. Despite losing seven of her puppies during this tough transition, Hannah’s spirit never wavered. She proved to be the most loving and dedicated mother, nurturing her babies with unwavering attention, care and play. Thanks to her, all three surviving puppies were quickly adopted into loving homes. And like most mama dogs, Hannah was overlooked. Now, it’s Hannah’s turn to find the forever home she so deeply deserves. At 75lbs and approximately 4 years old, Hannah is the perfect mix of active and chill. She’s a social butterfly who’s lived harmoniously with small dogs and even a 5-year-old child. However, her dream home would be calm, peaceful, and all about her—no other pets, just allowing Hannah to soak up all the love. Outdoors, she enjoys staying active and exploring, but indoors she’s the ultimate couch potato, ready for cuddles and naps. If you or someone you know is ready to give this incredible girl the life and love she’s been waiting for, email adopt@realgood.dog

Learn More

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

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

VELA

Mastiff

Female, Adult

San Clemente, CA

Size

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

Details

Spayed or Neutered,

Story

Please call the shelter directly if you are interested in this companion animal. The Email address is not monitored daily. 949-492-1617.I LOVE TO: Socialize and play with other dogs, run around and play in the yard, and be around people.I HAVE: A great smile and a loving personality. I have lived with other dogs in a previous home. I GET ALONG WELL WITH: Other dogs I have met here at the shelter.I WOULD RATHER NOT: Be left alone for long periods of time.I NEED: Puppy obedience training. I need a yard to play in, daily exercise and/or walks that will accommodate my energy level. I AM: Looking for a loving family to call my own!March 3, 2025, 2:26 pm

Learn More

Kali

Mastiff

Female, 5 yrs 10 mos

Ramona, CA

Size

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

Details

Spayed or Neutered,

Story

Meet Kali! 5-year-old Kali and her sister Kara (also available for adoption) were entrusted to our care through the Final Wish Program after their mom passed away. Kali was very loving and devoted to her mom, and with time, she will share her big heart with a new family. She enjoys playing fetch and is good with the 2-year-old granddaughter of her late owner. For the past 5 years, Kali lived with Kara, and they get along very well. They eat alongside each other without issue and share space and attention nicely. Both dogs earned high marks from the care staff where they boarded. Only a few days after becoming a Frosted Face, Kali was chosen for a two-week Frosted Fling. This will help us learn more about her in a home environment while allowing us to see how she and Kara do without the other. Happily, Kara is on a Fling getting lots of love in a home, too! Kali's fling mom shared this great first update: "Kali girl is loving her time at the Ranch! She met her pig and cow friends. We’re still not sure how we feel about cats, if they’re our friends or a toy, so for now we visit the kitties from a distance. Kali loves laying her head on your lap, that’s where she feels the safest. More updates to come when this rain stops, and we can go for walks and hikes!" Check back soon for the next update!

Learn More

Freeway

Mastiff Cane Corso

Male, Young

Wildomar, 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

Freeway is a happy smart sweet tempered dog. He loves walks and sun bathing. He loves people and great with kids. He's been out and about during family parties, so is great with guests. Although he does not bark everytime the doorbell rings he is territorial & protective. He is very food motivated, and loves practicing his obedience training fir treats. He is house and crate train. He just received his bordetella and DAP2PPV vaccination, as well as the 3yr rabies vaccination. He is Neutered and has a 3yr pet license

Learn More

Cuddles

Mastiff

Male, Adult

San Diego, CA

Size

(when grown) -

Details

Spayed or Neutered,

Story

How this pet arrived:This pet was brought in by a community member on December 24, 2024. Why this pet is the one for you:Meet Cuddles, a handsome, bashful guy looking for a calm and loving home! Cuddles can be a bit shy with new faces, and appreciates some patience while he builds trust. Once he feels comfortable, he blossoms into a relaxed, easygoing pup! Cuddles has been working with our trainers and has been an excellent student using positive reinforcement techniques. He's a smart boy who enjoys learning, and we'll give you lots of tips to continue his training and help him build confidence. Cuddles will thrive in low-traffic household with a family who can understand his needs and respect his space. If you're ready to offer this sweet guy the gentleness he needs, there will be no limit to the love Cuddles will share with you! Come speak to an adoption counselor to learn more about him today. At SDHS:This pet has been vaccinated, microchipped and spayed/neutered. This pet is now ready for adoption! Primary Color: Grey Secondary Color: Brindle Weight: 87.125 Age: 2yrs 2mths 2wks

Learn More

Bacon

Mastiff Dutch Shepherd

Male, Puppy

Dana Point, CA

Size

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

Details

Good with kids, Good with dogs,

Story

Meet Bacon!He's a 4.5 month old mastiff mix, and 50 pounds of fun. He's a goofy best friend, and will always keep you smiling. He's a bit of sunshine, and a bit of clown. Bacon loves other dogs, and he's a huge fan of people of all sizes. You can't go wrong with adding this jumbo sized cuddle bug to your family. Bacon is waiting to meet you!Interested in adopting this pet? Please contact us at questions@awishforanimals.org for more info.November 6, 2024, 5:40 am

Learn More

Pancho

Mastiff

Male, Adult

Dana Point, CA

Size

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

Details

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

Story

Meet Pancho!Poncho is the big teddy bear you’ve been looking forrrrrr! For the mastiff loving families out there who wants one of these gentle giants at a time, this is one you want! He was saved from a shelter death at the 11th hour and has been waiting for a family for 10 months. We’ve come to know him well and we’re shocked he hasn’t been a pick by a family yet. He’s an indoor/outdoor dog, loves the ranch life, loves to be with his people but also enjoys lounging in the backyard alone. He is great on leash, loads right up in the car, greets everyone with enthusiasm and joy, and he goes to stores around new people regularly. He does need to be the only dog in the home and cannot be around cats, and also needs a secure yard (brick wall, metal, etc is best but no wood). In true mastiff style he can be a bit of a bulldozer! We know Poncho is the right fit for a family out there, we just gotta find them. He’s approx 5 years old, neutered, vaccinated, and microchipped and 120 pounds of dreamboat.Pancho can't wait to meet you!Interested in adopting this pet? Please contact us at questions@awishforanimals.org for more info.December 4, 2024, 5:23 am

Learn More

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!

Special Needs

Edna

St. Bernard

Female, Adult

Riverside, CA

Size

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

Details

Good with dogs, Good with cats, Needs special attention, Needs experienced adopter, House-trained, Shots are up-to-date,

Story

Sweet Edna is about 4 years old. When we rescued her we thought she was a senior because she was slow to move and had trouble getting up. Then our vet said she was only about 4 during her exam. We also realized her arthritis suddenly got better! About a month after rescuing her she had a very aggressive seizure. We took her to the ER , got her stabilized and she is now on seizure meds for Epilepsy. We then realized this was probably why her former owners dumped her and why she had separation anxiety😢 Despite everything she’s been through she is still the absolute sweetest girl ever. She gives bear hugs and nuzzles for kisses. She constantly wants to talk about all the love she has to give🥹 she is potty trained and great with other dogs. We want a family where someone is always around to be with her. Imagine how many times she had to go through this ALONE!💔💔💔No wonder she gets separation anxiety🥺 We also want to make sure if there is another dog in the home and she happens to have another seizure that they would not react or try to attack her to stop the chaos. Although she was able to walk on her own after the seizure subsided, She is a giant breed dog so if a situation like this were to come up again and she needs to be carried out into the car , she needs an adopter who has the capacity to help move her around. Although her seizures may be stabilized for a long time, potentially forever , this will always be an underlying medical issue and her future adopters MUST be ready and equipped to take on this financial undertaking as well. Her monthly expenses for food , supplements, medication etc will not be cheap. She is not spayed due to the seizures and we dont know if we will be able to spay her as anesthesia is very risky with her condition. All this being said , this girl is truly special. She is one of the sweetest dogs we have ever met and anyone who meets her instantly falls in love. If interested in learning more about this dog & setting up a potential meet & greet, please fill out our adoption application. https://www.underdogheroes.org/applytoadopt

Learn More

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

Hey, new pet parents! (Free) help is here.

Check out our sister brand, Kinship, for vet chat, a nutrition calculator, basic obedience training, and (much) more. So you're never flying solo in this pet parenting thing.

Get Started

Mastiff puppies and dogs in Oceanside, California

Learn More:

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.

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

Home

Adopt a Dog

Adopt a Mastiff

California

Oceanside

Mastiff puppies and dogs in Oceanside, California

Learn More:

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.

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