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Mastiff puppies and dogs in Renton, Washington

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

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Adopt a Mastiff near you in Renton, Washington

These Mastiffs are available in Renton, Washington.
We'll also keep you updated on Tre's adoption status with email updates.
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Tre

Mastiff

Male, Adult
Renton, WA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Good with cats, House-trained,
Story
He is so sweet. My son got this dog as a puppy. He had papers but I lost them. I do not want to rehome him but my son does not want him anymore. He is my ESA but I just want him to have a loving home. Preferably w someone who really wants a large dog. He's loving n when I cry he lays on my lap. Please adopt him

Or, how about these Mastiffs in cities near Renton, Washington

These Mastiffs are available for adoption close to Renton, Washington.
We'll also keep you updated on Tre's adoption status with email updates.
Photo of Tre

Tre

Mastiff

Male, Adult
Renton, WA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Good with cats, House-trained,
Story
He is so sweet. My son got this dog as a puppy. He had papers but I lost them. I do not want to rehome him but my son does not want him anymore. He is my ESA but I just want him to have a loving home. Preferably w someone who really wants a large dog. He's loving n when I cry he lays on my lap. Please adopt him
We'll also keep you updated on Lucy's adoption status with email updates.
Photo of Lucy

Lucy

Mastiff

Male, 4 yrs 11 mos
Bellevue, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
✅Currently located in South Korea✅️ 💟Available to fly to SEA Meet Lucy🧡 Lucy was rescued from a mass dog slaughter house. Regardless of his harsh past, he's a little bit shy but gentle and calm.
We'll also keep you updated on ENOKI's adoption status with email updates.
Photo of ENOKI

ENOKI

Mastiff

Male, 1 yr
Kent, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Hi! My name is Enoki and I am available for adoption.I am a sweet and gentle boy who is looking for my forever home!I was brought in by a good Samaritan on 12/28/25 with my 4 other siblings. 3 Have been adopted and I am the last on here, patiently waiting my turn!I am a gentle and loving dog who likes to take things slow. Before arriving at RASKC me and my siblings had never walked on a leash! But I am practicing and getting better everyday!I just want to sit with someone and have them love me. If you take me home I will cuddle up with you everyday! You can win me over very quickly because I am actually very trusting! Stranger or not I will love you forever!My caregivers have noticed that I do well with other large dogs. I am vey submissive so I will lay down and allow the new dog to meet me slowly! When meeting dogs in a new home, I would do best with a slow introduction.I am a full grown large breed dog! Ask my caregivers about me! They will only tell you good things:)
We'll also keep you updated on Dynamic Dolly's adoption status with email updates.
Photo of Dynamic Dolly

Dynamic Dolly

Mastiff

Female, 2 yrs 2 mos
Seattle, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Hi, I’m Dolly! I’m a wild child who loves to play and have fun. I’m strong and full of energy, but I walk well on a leash and respond really well to redirection when I get a little too excited. I’m very dog friendly and I’m fully potty trained. People say I remind them of Bam Bam from The Flintstones — full of energy, strong, and impossible not to love. If you’re looking for a playful, spirited companion who will keep you laughing and active, I’m your girl! I am currently located in Texas but am available for adoption in multiple states across the country. My out of state adoption fee is $750. This fee helps cover the cost of care while I was at the shelter AND the cost of transporting me home! This includes: spay/neuter, if unaltered upon intake. age-appropriate vaccinations during time in care. a registered microchip if unchipped upon intake. a heartworm test if over six months of age. current flea/tick prevention during time in care. 3(+) broad spectrum deworming treatment. any medical expenses while in care. a health certificate for travel. the cost of travel (drivers, gas, and vehicle maintenance if via our route, or up to $200 in crate rental fees if on another transporter’s route!) Every adoption through the SPCA of Brazoria County also come with a PetSmart adoption kit, and some coupons for PetCo! Our first meeting/interview for adoption occurs on video call (Skype, FB Messenger call, Apply to adopt me at https://new.shelterluv.com/form/other/BRAZ/27759-long-distance-adopt-app. If you have questions, please email jami@spcabc.org.
We'll also keep you updated on Southern Moonshine's adoption status with email updates.
Photo of Southern Moonshine

Southern Moonshine

Mastiff

Male, 2 yrs 2 mos
Seattle, WA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Hi, I’m Moonshine! I’m a gentle giant with a big heart and an easygoing personality. Sometimes I forget just how big I am, but I promise I mean well! I love spending time with my people and doing my best to make them happy. I walk beautifully on a leash and am fully potty trained, so I’m easy to live with. I get along great with other dogs, and we think I’d do well with kids too. I’m very eager to please and love learning new things — I respond well to redirection and know how to respect boundaries. If you’re looking for a devoted, calm, and affectionate companion who just wants to be by your side, I’d love to meet you! I am currently located in Texas but am available for adoption in multiple states across the country. My out of state adoption fee is $750. This fee helps cover the cost of care while I was at the shelter AND the cost of transporting me home! This includes: spay/neuter, if unaltered upon intake. age-appropriate vaccinations during time in care. a registered microchip if unchipped upon intake. a heartworm test if over six months of age. current flea/tick prevention during time in care. 3(+) broad spectrum deworming treatment. any medical expenses while in care. a health certificate for travel. the cost of travel (drivers, gas, and vehicle maintenance if via our route, or up to $200 in crate rental fees if on another transporter’s route!) Every adoption through the SPCA of Brazoria County also come with a PetSmart adoption kit, and some coupons for PetCo! Our first meeting/interview for adoption occurs on video call (Skype, FB Messenger call, Apply to adopt me at https://new.shelterluv.com/form/other/BRAZ/27759-long-distance-adopt-app. If you have questions, please email jami@spcabc.org.
We'll also keep you updated on Duchess's adoption status with email updates.
Photo of Duchess

Duchess

Mastiff

Female, Adult
Black Diamond, WA
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
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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Renton, Washington.

Mastiff puppies and dogs in nearby cities

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Mastiff shelters & rescues in Renton, Washington

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

Here are a few organizations closest to you:

Rescue

5.7 miles

ADOGS(Adopt Dogs) - SEA Transport

Bellevue, WA 98006

Pet Types: dogs

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Shelter

8.7 miles

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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Shelter

9.4 miles

SPCABC - WA Transport Stop

Seattle, WA 98005

Pet Types: cats, dogs

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Rescue

13.7 miles

Cowboy Capital Pet Assistance League - WA transport

600 Summit Ave E, Seattle, WA 98102

Pet Types: dogs

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Rescue

19.2 miles

Charming Pet Rescue - WA Transport Stop

Bothell, WA 98011

Pet Types: dogs

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Rescue

23.4 miles

Forever Home Dog Rescue

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

Pet Types: dogs

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Rescue

25.1 miles

Lars's Pawsome Rescue

Tacoma, WA 98409

Pet Types: cats, dogs, small animals

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Rescue

35.4 miles

Gods Dogs Rescue of TX in WA Transport Stop

Everett, WA 98201

Pet Types: dogs

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Shelter

43.3 miles

Joint Animal Services

3120 Martin Way, Olympia, WA 98506

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

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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 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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