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Mastiff puppies and dogs in Washington

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

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Adopt a Mastiff near you in Washington

Below are our newest added Mastiffs available for adoption in Washington. To see more adoptable Mastiffs in Washington, use the search tool below to enter specific criteria!
We'll also keep you updated on Daisy's adoption status with email updates.
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Daisy

Mastiff/American Pit Bull Terrier

Female, Puppy
Vancouver, WA
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Here's what you need to know about me:I'm just a puppy! I'm still learning about the world and I'm ready to do that with a new family. I may be new to this 'family dog' stuff, but I've mastered the most important thing: being cute. Primary Color: Blonde Secondary Color: White Weight: 24 Age: 0yrs 0mths 10wks
We'll also keep you updated on Tucker's adoption status with email updates.
Photo of Tucker

Tucker

Mastiff

Male, Senior
Spokane, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Not good with cats, House-trained,
Story
My parents got tucker from my neighbors when he was a puppy and they were not good dog owners so i ended up taking him in but i cannot have him where im currently living and dont have anyone who can help out. hes starting to have hip issues but other than that hes perfectly healthy he doesn’t like being trapped in one room and likes to roam around and follow you around the house, which he currently isn’t able to do. he also does good outside to a degree but primarily has been an inside dog most of his life
We'll also keep you updated on Chance's adoption status with email updates.
Photo of Chance

Chance

Mastiff/American Pit Bull Terrier

Male, 6 yrs
Yakima, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Meet Chance!Chance came to our adoption center with a limp, but he’s recovering well and feeling better every day. He’s a mature, sweet boy with an easygoing personality—truly a “go with the flow” kind of dog. Chance walks nicely on leash, loves treats, and is happy just hanging out with his people.He’s done great spending time in the manager’s office, showing us that he’s calm, well-mannered, and comfortable relaxing in a quiet space. Chance is what we’d call a pretty casual dude.One thing that really tugs at our hearts—Chance doesn’t seem to know about the finer things in life yet, like cozy dog beds or soft blankets. It’s clear he hasn’t had many comforts before, and we would love nothing more than to see him go to a home that can show him just how amazing life can be.Chance is ready for a loving home, a comfy bed, and someone who will give him the care and kindness he’s been missing. Could that be you?This pet is available for adoption on 12/19/25 at the Yakima Humane Society adoption center. If you recognize this animal please contact the adoption center at 509-457-6854.Did you know YHS offers a `Play Date` program?Whether you are interested in adopting or just want to hang out with a furry friend, it`s a fun way to spend an hour, an afternoon or even a couple days. Stop by the front desk or call in and ask how to have your Play Date today.Ready to adopt? Great news—our spayed/neutered pets are available to go home the same day! You can visit us in person, give us a call, or apply online—whatever works best for you. Your adoption fee includes: A lovable new companion, spay/neuter surgery, vaccinations + deworming, flea/tick treatment, rabies vaccine (for pets 3–4 months and older), and microchip with nationwide registration.For online adoptions please fill out our quick adoption questionnaire here: https://yakimahumane.org/adopt/apply/Questions? We’d love to hear from you! Email us at adoption@yakimahumane.org, call us, or just stop by.Let’s help you meet your new best friend!
We'll also keep you updated on Spike's adoption status with email updates.
Photo of Spike

Spike

Mastiff/Mutt

Male, Adult
Tacoma, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Not good with dogs, Not good with cats, Needs experienced adopter, House-trained,
Story
Just ask please.
We'll also keep you updated on Yogi Bear Hug Your Goofy Guardian's adoption status with email updates.
Photo of Yogi Bear Hug Your Goofy Guardian

Yogi Bear Hug Your Goofy Guardian

Mastiff

Male, 1 yr 3 mos
Bellingham, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained,
Story
Yogi says if you buy the toys, he will bring the love! Let’s get right to the key details about Yogi’s favorite things in the world. In no particular order-people, toys, and affection - sometimes all at once. If you are familiar with the breed, so much of him will be so familiar! Take a look at his video to catch those signature mastiff- like moves then come back to read more about him. https://youtu.be/ghHJi5U86No Yogi is so fortunate and is fostered in a dedicated home with a professional dog trainer- lucky him, lucky you! His foster has fallen in love with him and praises his enthusiasm for learning and contagious fun-loving nature. Yogi is estimated to be right around 1 year-old. Likely a Mastiff mix (take one look and tell me you don’t see it) and he weighs a healthy 103 lbs. That weight is equal parts strength, sweetness, and silly puppy energy. This boy is affectionate to his core and when he loves you, he really loves you, like the type of dog who will flop his full weight into your lap or throw himself across your legs for belly rubs. Lap-dog life choose him, plain and simple. Because of that eagerness, and sheer size, he needs a confident handler who understands how to set and maintain boundaries. He listens well to calm, assertive leadership and is learning “drop it” and “leave it” beautifully with his foster/trainer. Yogi’s trainability is on display when you see him on-leash. If you’re anything like me, there is nothing more physically empowering than walking a giant dog calmly and with full control. Yogi will meet you half way on that if you share that sentiment. He walks well on leash, keeps an easy pace, and is responsive to his handler. Of course given all training is on-going, he will need continued reinforcement to keep improving his focus no matter what he encounters while on a walk. Yogi’s love of toys, and shared play with them like tug-of-war, can lead to him getting over-stimulate which can lead to him getting vocal and a little mouthy. He is not coming from a negative place but he is working on this because it can be easily misunderstood as negative behavior. He is responding wonderfully to consistent structure, strong sense of commands and clear communication from his handler. Yogi’s love for toys is deep and true and because of his size, his ideal home will be one without small children and either as an only dog or paired with a confident, easy-going female who isn’t toy-obsessed. He’s met other dogs and does well with calm companions who give him space to relax and just be his goofy, briefly-bouncy, oversized self. True to the Mastiff spirit, Yogi is loyal, smart, and sensitive. He wants to please his person and thrives with routine, patience, and love. He is both house and crate-trained, goes into his kennel on command, and knows “sit” and “leave it” like a pro. He would do best in a home (not an apartment) where he can stretch those big legs and cool off indoors after a short romp- aka not Texas. The Texas heat is not his favorite! If you’ve been looking for a big, soulful sidekick, one who is as huggable as he is striking, Yogi is ready to deliver! This carnival-prize-teddy-bear-dog is going to make an incredible lifelong companion! Ready to welcome Yogi home? Apply today! https://adopt.animalsfirst.com/animal/62cc8e128b02916730334440/68e80aa02f1fa5d9bd0bdc03 Questions? Email kristenboswell@threelittlepittiesrescue.org We facilitate adoptions nationwide using our rescue run USDA certified transport system, ensuring every pet travel 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 $1200 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.
We'll also keep you updated on Xena gorgeous and gentle girly's adoption status with email updates.
Photo of Xena gorgeous and gentle girly

Xena gorgeous and gentle girly

Mastiff

Female, 5 yrs 8 mos
Bellingham, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained,
Story
This sweet girl is Xena! When you first meet her, you’ll realize that she’s two things: gorgeous, number one of course,then you’ll realize how gentle she is. Xena is not the smallest girl in the bunch, however, she is the most calm and laid-back—almost to the point where you will forget she’s there. You can often find her and her doggie bed or on the couch. Those are her happy places. well, anywhere she can lay down is really a happy place for her. If you can’t find her in those two places, you can most likely find her outside sunbathing while her friends romp around in the grass. Life with her is simple and sweet— just as it should be! Watch Xena and get to know her endearing self right here! https://youtu.be/Tw_C3T6JvQg?si=r1DB-Q_90B07U1Zc We believe that Xena is a mix between a mastiff and a Staffordshire terrier. We believe she is around 5 years old! With rescue this is just a guess. However, one thing that we can promise? Lots of love and snuggles in your future. Xena is a gorgeous fawn color with the sweetest droopy puppy dog eyes looking up at you like “are you gonna give me a treat or what?!” She’s a thick girl that’s not running any marathons, but she can promise you that she will be the best snuggle bug in the house. Her Foster’s children love to tuck her in and make her a little burrito in her blankies. She would be the perfect family dog for a family that loves to relax and sit outside having many backyard barbecue nights and morning coffee in the rocking chairs. I could see Xena happily sitting outside with you watching you garden and water the flowers. Xena would really be happy observing anything as long as she gets to lay down. She’s hilarious. But don’t think she’s all naps— Xena enjoys a good trip to the local park where she can watch the kids play and get her exercise in. The best part about going to the park is obviously all the compliments that she receives. “Oh she’s so beautiful!” “What’s her name? She’s gorgeous!” “Xena you are so calm!” Etc. Xena is extremely dog friendly living with four other foster dogs. She gets along well with everyone. she loves to do her own thing at the end of the day. If the other doggies have zoomies, she’ll happily watch them and cheer them on. She greets everyone with a gentle sniff and then she’s on her way to go say hi to the next doggie friend. We think that Xena could fit into really any chill pack because she gets along well with both male and females. Xena’s perfect partner? A chill older pup like herself who enjoys movie nights and couch cuddle puddles. Xena would love a backyard, but one is not required. She is easy as pie on leash and she would love to go on a walk around the apartment complex if that’s what she needed. I could totally see her happily, watching everyone from a balcony taking in the world around her. Her larger size may make her more of a candidate for a house with the backyard, especially because she’s not built for lots of exercise. Lol. We have not seen her with any kitty cats just yet, but we are happy to test her with whatever you may need. Just say the word! Does Xena sound like your girl? Apply today! https://adopt.animalsfirst.com/animal/62cc8e128b02916730334440/6826076556dd4bd3640cf500 Questions? Ask Megan.rhoades@threelittlepittiesrescue.org We facilitate adoptions nationwide using our rescue run USDA certified transport system, ensuring every pet travel 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 $900 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.

Search for a Mastiff puppy or dog

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

Mastiff puppies and dogs in Washington cities

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Mastiff shelters & rescues in Washington

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

Here are a few organizations

Shelter

Regional Animal Services of King County (RASKC)

21615 64th Ave. S., Kent , WA 98032

Pet Types: cats, birds, dogs, rabbits, reptiles, small animals

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Rescue

Cowboy Capital Pet Assistance League - WA transport

600 Summit Ave E, Seattle , WA 98102

Pet Types: dogs

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Rescue

ADOGS(Adopt Dogs) - SEA Transport

Bellevue , WA 98006

Pet Types: dogs

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Shelter

SPCABC - WA Transport Stop

Seattle , WA 98005

Pet Types: cats, dogs

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Rescue

Forever Home Dog Rescue

PMB 146 19410 Highway 99 Ste A (mailing), Lynnwood , WA 98036

Pet Types: dogs

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Looking for a specific shelter or rescue?

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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