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Mastiff puppies and dogs in Portland, Oregon

Looking for a Mastiff puppy or dog in Portland, Oregon? Adopt a Pet can help you find an adorable Mastiff near you.

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Adopt a Mastiff near you in Portland, Oregon

These Mastiffs are available in Portland, Oregon.
Photo of Dozer

Dozer

Mastiff

Male, Adult
Tigard, OR
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##
Photo of Jasper

Jasper

Pointer Mastiff

Male, 4 yrs 3 mos
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
PLEASE pick me! I am a sweet, loving, happy semi energetic lad looking for an active Pointer mix family. You can contact us directly at Kzyrnr17@yahoo.com or info@dogdiggityrescue.com, or fill out an application at either https://www.shelterluv.com/matchme/adopt/HTX/Exotic/Other Jasper is a 12 mos 74 lb Pointer/Mastiff mix. I am one large goofy puppy that LOVES my people unconditionally and playing with calm dogs my size. I am house trained and crate trained. I am pretty smart and know commands down and sit. I do walk on leash but due to my muscle size I do need some leash walking polishing. I will do best in a calm and active home with another dog or no dog. I would enjoy walks/hikes, outdoor outings and lots of companionship. Also need a house with a securely fenced yard.. No apartments! Scared of cats (dont know what they are) This is a courtesy post for Helotes Humane Society You can contact us directly at Kzyrnr17@yahoo.com or info@dogdiggityrescue.com, or fill out and application at either https://www.shelterluv.com/matchme/adopt/HTX/Exotic/Other All adopted pups and dogs are transported to families throughout the USA and Canada when fully vetted, spayed/neutered and microchipped. For information on how to adopt me, please contact my foster parents at info@dogdiggityrescue.com. L&S Dog Diggity Rescue is headquartered in San Antonio, Texas, where there are over 350,000 homeless pets. We save homeless and abandoned dogs and find them loving forever homes in other areas, where pet homelessness is not epidemic. All of our pets are located here, in San Antonio, and we partner with rescues to provide transportation for our pets to their new homes. Our adoption fee includes vet care (vaccinations, spay/neuter, microchipping, etc), as well as transportation and health certificate. Please contact us to ask about our adoption process and our adoption fees.

Or, how about these Mastiffs in cities near Portland, Oregon

These Mastiffs are available for adoption close to Portland, Oregon.
Photo of Dozer

Dozer

Mastiff

Male, Adult
Tigard, OR
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##
Photo of beanie

beanie

Mastiff German Shepherd Dog

Female, Young
Hillsboro, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with cats, Needs experienced adopter, House-trained, Shots are up-to-date,
Story
Beanie simply needs more attention with my long work hours, and my family gone she deserves a better chance.
Special Needs
Photo of Buddha

Buddha

English Mastiff Bluetick Coonhound

Male, Adult
Battle Ground, WA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Not good with cats, Needs special attention, Needs experienced adopter, House-trained, Spayed or Neutered,
Story
Believe in second chances! I'm Buddha boy, a shining star waiting to sparkle in my forever home! 🌟 I'm a people person and a loyal companion. At my age I prefer to be an only pet. 🙏 On a leash, I'm a rockstar! I thrive on walks and can't resist a game of fetch. And, for my age, I'm still agile and full of life! 💪 I love going "bye bye" in the car to head for walks! I am a great car rider! My ideal home would be one that is quiet and allows me to just be the special dog that I am. One that doesn't have a lot of traffic in/out. I take time to warm up to new people and would prefer a home where I was not bombarded with new things all the time. I thrive on consistency. 🐾 Please note: no small pets, cats, or dogs, as my instincts might get the better of me. If you are interested in me, please fill out an application on our website! www.ipawditforward.org
Photo of Dusty

Dusty

Mastiff

Male, Adult
McMinnville, OR
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Not good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
You can fill out an adoption application online on our official website.Visit this organization's web site to see any additional information available about this pet.March 11, 2026, 12:11 am
Photo of Capone

Capone

Mastiff Cane Corso

Male, Young
McMinnville, OR
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, Not good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
You can fill out an adoption application online on our official website.Visit this organization's web site to see any additional information available about this pet.March 11, 2026, 12:11 am
Photo of Ralph BW

Ralph BW

Mastiff Mixed Breed (Large)

Male, 1 yr 3 mos
Salem, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered,
Story
Ralph the Derp! Ralph is a huge friendly, enthusiastic, uncoordinated 4-legged energetic goofball! He was rescued from “death row” at a high kill shelter, as a skinny stray with a treatable skin condition. His fur has almost completely grown in & he is now at a healthy weight. This overgrown mastiff/Cane Corso mix pup has no comprehension of his size, leaning into humans for affection or trying to ooze onto laps for cuddles. He is being trained not to jump and not to paw for attention/affection/play because he currently has 85# of mass behind those “congenial” moves. Ralph plays well with dogs of all sizes, but would do best with med-to-larger dogs due to his size & poorly curbed gusto. He hordes toys, taking them all to his chosen dog bed of the day. He likes to carry a special toy “baby” in his mouth when going out in the yard. He does need to be fed in his crate & will guard his empty food bowl from other dogs, unless he is distracted with a toy & led outdoors after meals. He is great on a leash, makes awesome grunty sounds when cuddled, enjoys baths. Ralph will make a great addition to an active family with older children. He is eager to please, food and affection oriented (although a bit stubborn at times), making him an ideal candidate for success with continuation of his training. Please consider adopting the gorgeous big derp into your home. Attributes: In training to avoid jumping/pawing Active family He is neutered, microchipped, had recent cherry eye repair and up to date on all vaccines and preventions. Local adoption fee is $200(in TX) Out of state adoption fee is $450 (includes transport to your area)

These pups are in Portland, Oregon too!

Below are our newest added Mastiffs available for adoption in Portland, Oregon. To see more adoptable Mastiffs in Portland, Oregon, use the search tool below to enter specific criteria!
Photo of Norman

Norman

St. Bernard

Male, Adult
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with kids, Not good with dogs, Good with cats, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Meet Norman – Your Gentle Giant Companion 🐾 Norman is a 6.5-year-old Saint Bernard with a big heart to match his big paws. This handsome boy can be an absolute love bug once he feels comfortable and bonded with his people. He enjoys affection, lounging nearby, and being a loyal presence in the home. He does not do well with younger kids and is not good with other dogs either. He prefers the cold so AC is needed! Norman has a history of mild hip dysplasia and will need ongoing dental maintenance to keep him healthy which he has with his transferrable insurance for $112/month. This insurance covers all of his health care needs for no additional costs other than the monthly payment. Why Norman? If you're looking for a devoted companion who will reward your patience with deep loyalty and affection, Norman is the perfect match. He’s a gentle sensitive giant who just needs the right home and unfortunately, we have to re-home him with two little infants in the home.
Photo of Bo Maverick

Bo Maverick

Belgian Malinois Neapolitan Mastiff

Male, Adult
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
Meet Bo Breed: Belgian Malinois / Mastiff Mix Sex: Male DOB: August 3, 2022 Weight: 70 Pounds Health: Healthy and doing well Bo is a handsome, intelligent boy with a big heart and an even bigger personality. This energetic Malinois/Mastiff mix combines the loyalty and devotion of both breeds with a playful spirit that makes every day feel like an adventure. Sadly, Bo has become one of the rescue’s long-timers, patiently watching other dogs leave for their forever homes while he continues to wait for someone to notice him. He deserves the chance to finally leave the shelter behind and start the life he’s been hoping for. Personality Bo is affectionate, loyal, and full of joyful energy. He loves interacting with people and thrives on connection and companionship. His playful personality keeps life fun, whether he’s enjoying a walk, learning something new, or simply spending time close to his humans. Bo forms strong bonds and becomes deeply devoted to the people he trusts. His sweet nature and loving heart make him a wonderful companion who truly wants to be part of a family. Breed Info A Belgian Malinois and Mastiff mix combines intelligence, strength, and loyalty. Malinois are known for their sharp minds, trainability, and desire to work closely with their owners, while Mastiffs bring calm confidence and deep devotion to their families. Dogs with this mix tend to be incredibly loyal and thrive when given both mental stimulation and physical activity. With structure and engagement, they become deeply bonded companions who love being involved in daily life. Owner Responsibilities Bo already has a foundation of basic training, but like many intelligent dogs, he will benefit from continued training and mental enrichment. Regular exercise such as daily walks, play sessions, and activities that challenge his mind will help keep him happy and balanced. Positive reinforcement training will strengthen the bond between Bo and his adopter while helping him continue to grow into a confident, well-mannered companion. ⚠️ Things to Consider Before adopting Bo, it’s important to think about your long-term lifestyle and stability. Are pets allowed where you live now and in the future? If you move, will Bo move with you? Do you have the time each day to provide exercise, engagement, and companionship? Are you financially prepared for routine veterinary care, food, and unexpected medical needs? Dogs like Bo deserve a home that is committed to them for life. Vet Care Even though Bo is healthy, adopters should establish care with their own veterinarian soon after adoption. This helps ensure preventative care continues properly and provides a trusted medical partner for Bo’s long-term health and well-being. Understanding the 3-3-3 Rule Like most rescue dogs, Bo will need time to adjust to his new home. The first 3 days he may feel unsure as he decompresses from the transition. The first 3 weeks he will begin learning your routine and feeling more secure. By 3 months, his confidence will grow and his full personality will shine. Patience and consistency during this adjustment period will help Bo thrive. Why Bo? Bo has waited patiently for someone to see the amazing dog he truly is. He is loyal, playful, intelligent, and full of love to give. Long-timer dogs like Bo often become the most devoted companions because they know what it means to finally be chosen. The family who gives Bo his forever home will gain a faithful friend who will stand by their side through every adventure. Adoption Information If you are interested in adopting this wonderful dog, please complete an adoption application by visiting: https://www.ozzieandfriendsrescue.org/adoptions Thank you for considering adoption through Ozzie and Friends Rescue, a Los Angeles–based rescue dedicated to giving dogs a second chance at a loving home. Our team carefully reviews every application and will reach out to help match you with the right dog for your home and lifestyle. You may be seeing our dogs listed in your state because we work hard to give as many of our rescue dogs as possible the opportunity to be seen by loving families beyond our local area. While we are based in Los Angeles, we expand our reach throughout the Western United States and the Midwest to help more dogs find the forever homes they deserve. We understand that transportation and adoption fees can sometimes feel like a big commitment, and we truly appreciate every person who considers opening their heart and home to a rescue dog. Our goal is simply to give these dogs the best chance at being seen, adopted, and loved. Ozzie and Friends Rescue coordinates safe and reliable transport so adopted dogs can travel to their new homes across the Western United States, Canada, and the Midwest. We can’t wait to help you meet your next fur-ever best friend. May 17, 2026, 11:51 am
Photo of Sporty Spots

Sporty Spots

American Bulldog St. Bernard

Male, Adult
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Not good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Sporty Spots is a very handsome Saint Bernard American Bulldog mix that weighs about 80 pounds! He absolutely loves people and loves to get attention and belly rubs! He will sit with his head in your lap getting all the head scratches for hours if you let him. He is a goofball and is sure to make you laugh and smile everyday.  Spots is a super friendly and outgoing dog. He is good with children that are aged 14 and over! He loves toys, and he also loves to play in water. He is the kind of dog that would love to play in the sprinklers and have his own little pool he can play in. He really loves to play with balls, he will chase them all day. Spots would do best in a home that has a backyard for him to run around in.  Spots does well with some dogs that are his size or larger. Spots will need to go to a home that has a strong handler and has owned large dogs before. So far, he has learned to sit, stay, and lay down.  Overall, Spots is an amazing dog that is waiting for his forever home. He is very loyal and very friendly with other people. He also is very protective of his home and loves to keep patrol of his yard! He loves toys and water and would make the perfect travel buddy! If interested in Zee Bo please go to https://www.ozzieandfriendsrescue.org/adoptions Ozzie and Friends Rescue makes arrangements for all dogs adopted to be transported all across the West Coast .  May 17, 2026, 11:51 am

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Mastiff shelters & rescues in Portland, Oregon

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

Here are a few organizations closest to you:

Rescue

13.4 miles

BAMM Rescue - Tigard, OR Foster

Tigard, OR 97224

Pet Types: dogs

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Rescue

24.5 miles

I Paw'd It Forward

Battle Ground, WA 98604

Pet Types: dogs, farm animals

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Rescue

37.5 miles

Mastiff Rescue Oregon

McMinnville, OR 97128

Pet Types: dogs

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Rescue

47.8 miles

God's Dogs Rescue of TX in OR Transport Stop

Salem, OR 97306

Pet Types: dogs

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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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