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Mastiff puppies and dogs in Oregon

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

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Adopt a Mastiff near you in Oregon

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

Bear Your Main Man

Mastiff

Male, 3 yrs
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained,
Story
Bear Your Main Man is 110 pounds of handsome, and he takes up a very satisfying amount of space beside his person. He’s loving, enjoys being sweet-talked, and is happy to keep you company while you go about your day. His size certainly makes an impression, but the affection is what will have you making room for him at home. And possibly shopping for a bigger dog bed. Go watch Bear on YouTube to see this gorgeous guy out for a stroll, enjoying a drive around town, and soaking up all the love. Copy and paste his YouTube link into your browser: https://youtu.be/NqSan7VHckM We believe Bear is a Mastiff mix, with a look that reminds us of a Neapolitan Mastiff, though his breed is our best guess. He’s gorgeous, substantial, and a surprisingly low-key for a dog who has such a presence. At home, Bear is happy to putz around with you. Going into the kitchen? He might come along. Settling in for a quiet evening? Wonderful. He’ll find a spot to stretch out and become a very large rug. Being near his person and having somewhere comfortable to lounge suits him perfectly. Bear seems especially drawn to women, men are welcome but can you blame a big boy for having heart for a lady? Of course not! For a woman who loves big dogs, his devoted company and impressive presence is a lovely combination. He’s easy to picture beside you during a quiet evening, close enough for an occasional head rub while you unwind. He’s also a wonderful car companion. Bear generally hops right in and settles nicely in the back seat, ready to enjoy the ride. After a longer walk, a little sweet talk may help him decide to make the hop but its no trouble at all despite his size. And if there’s a chance to catch a breeze through an open window, he will be extra pleased to tag along on whatever adventure you choose. Walks with Bear are enjoyable, too. He has a great pace and walks nicely on leash. Squirrels can catch his attention, but he responds well to guidance. At 110 pounds, he’ll need a confident handler who is comfortable managing a large dog and can help him keep his enthusiasm about those pesky squirells in check. Bear knows sit, shake, and down, and he takes his treat payments gently. He also loves the water, so a chance to splash around would be a lovely addition to his otherwise fairly chill and leisurely agenda. If you ask Bear what his dream match would be we are sure he would say - a home where he is the only dog so he can enjoy his people all to himself. That does not mean dogs are not welcome but Bear doesn't need them to be happy. One of his current doggie friends is an easygoing female dog who understands all he wants is peaceful companionship and will pass on wrestling or chasing. Good company on a walk, a handsome passenger in the car, and a big, loving presence at home—Bear is ready to be your main man. A little sweet talk, some room to stretch out, and a person to adore would make him very, very happy. Apply to adopt Bear here: https://adopt.animalsfirst.com/animal/62cc8e128b02916730334440/6abc218569f70e230d0178b7 Questions? Contact Kristin@threelittlepittiesrescue.org We facilitate adoptions nationwide using our rescue run USDA certified transport system, ensuring every pet travels safely and comfortably with 24/7 care. Our transport includes drop off locations, in WA, UT, OR, ID, VA, PA, OH, NY, CT, VT, TN, KY, WI, MN, IL, WI and Canada (pick up in Bellingham, WA, Buffalo, NY or Brattleboro, VT for for Canadian adopters). You will have the opportunity to track their journey in real time, see photo updates, learn fun facts, connect with fellow adopters and fosters through our private Facebook event page! Before the adoption is finalized, you will meet your pet through a video call, creating a fun and personalized experience! The adoption fee is $1000 and includes all vetting (DAPP with booster, Bordetella, Rabies vaccine, multiple broad spectrum deworming treatments, spay/neuter, flea prevention, a 12 month heartworm preventative injectable, heartworm test and treatment if needed, a microchip with free lifetime registration, a high quality nylon Martingale collar, a health certificate deeming the pup healthy for travel, cost of transport*, and priceless years of love and loyal companionship! We proudly have over 17,000 successful adoptions and excellent Google Reviews: https://g.co/kgs/UQ5Pyai We care deeply about creating lasting matches between dog and family for long term success, and take the time to ensure each adoption is a fit through our matchmaking process. At our 2 acre Texas based property, we assess every animal with trainers on staff, we modify behavior as needed, and create individualized behavior plans to help prepare dogs for their future families including crate training, potty training, leash walking, etc. Our fosters are able to attend group training and socialization play groups helping them stay confident, well rounded, and adoption-ready. Our on-site trainers are dedicated to each dog’s growth and we enjoy seeing their progress! We go above and beyond to ensure every animal receives exceptional care. Veterinarians consistently praise our medical standards. From routine care to advanced treatments, each dog receives personalized attention. Hard costs for a healthy dog range from $804-$920; heartworm-positive dogs or those needing specialized care can exceed $2,000+. Adoption fees help cover a portion of these expenses, but without government funding, we rely on fundraising to bridge the gap—ranging from $100–$1,000+ per dog. Our adoption fees reflect the extensive care and resources that go into each animal we save. The adoption fee is a donation to the mission and goes far beyond getting a fully vetted pet. It doesn’t stop there! Our adopters also receive these SPECIAL PERKS: Extensive behavioral testing and information from trainers on our staff to ensure the perfect fit for your family Discounts on Embark DNA test kit- $30 off of Breed ID test or $50 off of Breed ID plus Health test 30 day trial of pet insurance with Trupanion A free private online dog training session with GoodPup, plus low pricing for future sessions Access to multiple dog trainers in your area, along with $40 off of your first session of in person dog training through Rover Training 70% off of your first order of Fetch, a delicious PNW based fresh dog meatballs subscription Coupons for a fun visit to Petco 20% off of Dr. Cuddles pet first aid and hygiene solutions Discounted heartworm, flea prevention, and monthly dewormer Access to our exclusive FB Adopters page, where you can network for play dates, resources, and connect with other adopters that share their passion for their adopted pup! The Greater Houston area faces one of the highest stray and overpopulation rates in the U.S. We’re a nonprofit on a mission—to rescue, rehabilitate, and rehome dogs at risk, while promoting spay/neuter outreach in the community. When you adopt, you save more than one life— the one you adopted, and the space opened up to save another. Follow our journey and stay connected! 🌐 threelittlepittiesrescue.org 📘 facebook.com/threelittlepittiesrescue 📸 instagram.com/threelittlepittiesrescue Ready to welcome a new furry friend into your life? APPLY TODAY and become a hero for pets in need! *Due to rising transportation costs, a $87 surcharge applies. DISCLAIMER- Breed type is determined based on general appearance and behavioral characteristics, and cannot be guaranteed without DNA testing. NOTE- Texas adopters must pick up from the Houston area.
Photo of Oskar

Oskar

Mastiff

Male, 4 mos
Portland, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs,
Story
Meet Oskar! Oskar is a big ball of puppy joy with an even bigger set of paws. He spends his days doing what puppies do best - snuggling up for naps, tumbling around the backyard, tagging along after his foster brothers like they hung the moon, and belly-flopping into any bit of water he can find. Those gigantic webbed feet of his are almost comically too big for him right now, and honestly, we think he's training to be a future (slightly less graceful) Michael Phelps. At just 3 months old (As of September 7th, 2026), he's already 40 lbs of pure puppy enthusiasm, which means there's a whole lot of goofy, loyal, cuddly dog still to grow into. Every day with Oskar is a little bit of chaos and a whole lot of sweetness - he greets you like you hung the stars, follows you from room to room just to be near you, and melts right into your lap the second you sit down. Oskar is looking for a family ready for a lifetime of splashing in puddles, learning new tricks, and endless belly rubs. If you've been waiting for a sign to bring home a big, happy, water-loving goofball, this is it - come meet Oskar, and we promise he'll steal your heart the second you do.
Photo of Chief

Chief

Mastiff

Male, Senior
McMinnville, OR
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
House-trained,
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.October 2, 2026, 3:21 pm
Photo of Kodiak

Kodiak

Mastiff/Shepherd (Unknown Type)

Male, 3 mos
Salem, OR
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Good with kids, Good with dogs, Good with cats,
Story
Meet Kodiak! Kodiak is a 3.5-month-old Mastiff/Shepherd mix who currently weighs about 28 pounds. He came to us from Washington with his siblings after a kind woman took them in when they were just six weeks old. After growing up surrounded by people and other dogs, this sweet boy is ready to find his forever home. Kodiak is the talker of the group! He loves to snuggle into his person and quietly “chat” while he’s being cuddled. He also has an impressive hound-style howl and used to greet his caregiver with one when she came home at night. Kodiak can be a little more cautious than his siblings. When something makes him unsure, he tends to retreat to a place where he feels safe. A patient family that helps him continue building confidence while experiencing new things will be a wonderful fit. This boy also really loves his food! He can be enthusiastic at mealtime, so his caregiver had already begun working with him on patience and portioning. He has not shown food aggression—he’s simply very eager to make sure he doesn’t miss a bite. Kodiak enjoys long walks, digging in the dirt, playing tug-of-war, exploring outside, and following his people around. He is learning to come when called and will benefit from continued training and positive reinforcement as he grows. Kodiak is good with dogs and kids so would be a good family dog. He should do well with cats with proper introductions. If you’d like a sweet, snuggly boy who will cuddle up and tell you all about his day, Kodiak is ready to meet you. Kodiak's adoption fee is $495 and he has received age-appropriate vaccinations and is microchipped. Apply to meet Kodiak today!
Photo of Diego JuM

Diego JuM

Mastiff/Mixed Breed (Large)

Male, 2 yrs 2 mos
Salem, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs,
Story
I'm Diego, a striking 2-year-old chocolate and blond brindle Mastiff mix, and I've got the heart of an adventurer! 🐕 At 63 pounds of pure energy and loyalty, I'm already neutered and crate trained—ready to be your partner in crime. I thrive with active owners who can match my enthusiasm, and I'm fantastic with other dogs, so playdates are always a go! If you're looking for a friendly, energetic companion who'll stick by your side through thick and thin, come meet me today. 💪❤️ Local adoption fee is $300 (in TX) Out of state adoption fee is $550 (includes transport to your area)
Photo of Lilo

Lilo

Mastiff/Mixed Breed (Medium)

Male, 3 yrs 4 mos
Salem, OR
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs,
Story
Aloha. My name is Lilo. Yes, that Lilo. Unfortunately, I came without my own Stitch, but I am currently accepting applications. I'm a 3 year old, 95 lb. Mastiff mix, which means I look like I could wrestle a bear, but emotionally I'm more of a "did that leaf just move" kind of guy. New people are a little overwhelming, and I'll need some time to decide you're actually part of my ohana. Once you've earned my trust, though, congratulations. You now have a 95 pound shadow who believes personal space is a myth and that every couch was specifically designed for us to share. I'm a professional homebody. I'd much rather spend my evenings snuggled up inside where it's cozy, snacks magically appear, and we can pretend the outside world doesn't exist. If your ideal weekend includes blankets, movies, and absolutely no social obligations, I think we just became best friends. I also get along great with other dogs. My only request is that they're more "peaceful yoga retreat" than "spring break in Miami." Calm friends are my favorite kind of friends. Cats are still a mystery to me. They might be tiny roommates. They might be fuzzy little bosses. We can absolutely do a cat test to find out. As for tiny humans, I'd do best with kids 8 years or older who understand that sometimes I need a little extra time and space while I figure things out. Once I'm comfortable, I'm all about gentle affection and hanging out with my favorite people. So if you're looking for a dog who's equal parts gentle giant, cuddle enthusiast, professional couch companion, and recovering introvert, I might just be your guy My adoption fee is $295 and I'm neutered, vaccinated and microchipped. Apply to meet me today!

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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Oregon.

Mastiff puppies and dogs in Oregon cities

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Mastiff shelters & rescues in Oregon

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

Here are a few organizations

Rescue

The Asher House

Salem , OR 97302

Pet Types: dogs, farm animals, horses

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Rescue

Mastiff Rescue Oregon

McMinnville , OR 97128

Pet Types: dogs

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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 information

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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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