Mastiff Puppies and Dogs in O Fallon, MO - Buy or Adopt

Adopt a Mastiff near you in O Fallon, Missouri

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near O Fallon, Missouri

These Mastiffs are available for adoption close to O Fallon, Missouri.

VAN GOGH

Mastiff

Male, 2 yrs 1 mo

St. Louis, MO

Size

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

Details

Spayed or Neutered,

Story

Want to know about Van Gogh? Lend us your ear! Van Gogh will paint your world with vibrant colors! He has a colorful personality with lots of love to give! He has lived with another dog before and loves everyone he meets!

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SWIFFER

Mastiff

Female, 2 yrs

St. Louis, MO

Size

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

Details

Spayed or Neutered,

Story

Swiffer is a sweet and playful young lady who walks well on a leash. She loves affection and attention!

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DUSTY

Mastiff

Male, 3 yrs

St. Louis, MO

Size

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

Details

Spayed or Neutered,

Story

Dusty is one big, handsome boy! He`s a friendly guy who knows how to `sit` and `shake` and walks well on a leash. He has been non-reactive to other dogs at the shelter and very sweet with people! You gotta meet this big love today!

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Charley

Mastiff Mastiff

Female, Adult

Wright City, MO

Size

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

Details

Good with kids, Good with dogs, House-trained, Spayed or Neutered,

Story

This is Charley! She is a five year old English Mastiff. She is just the absolute sweetest. She is a little smaller for a mastiff but has a huge heart. We are rehoming her for no fault of her own. If you are looking for a best friend, who is content just being by your side and cuddling, she is the dog for you!

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Finrir

Mastiff Mixed Breed (Medium)

Male, Adult

St. Louis, MO

Size

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

Details

Spayed or Neutered,

Story

Meet Finrir (Finn)! Finrir, affectionately known as Finn, is ready to charm his way into your heart and home! About Finn: Finn is an 85 lb Mastiff mix with a heart as big as his size. He's a gentle giant who thrives on one-on-one attention and would love to be the center of your universe! Despite his size, Finn is a total softie. He's non-destructive and a pro at taking his medicine with ease. While Finn prefers to be the only fur baby in the house due to some dog reactivity, he'll fill your home with enough love to make up for it! What Finn Needs: A loving family who understands his need to be the only pet. Plenty of space for him to stretch out and relax. Someone who enjoys leisurely strolls because Finn walks like a true gentleman on the leash! Interested in Adopting? If you're ready to give Finn the forever home he deserves, reach out to Center for Animal Rescue and Enrichment of St. Louis - CARE STL Let's find this big guy his perfect match! Help spread the word by sharing this post with friends and family. Together, we can help Finn find his happily ever after! #AdoptDontShop #FosterDog

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Billy

Mastiff American Pit Bull Terrier

Male, Adult

East ST Louis, IL

Size

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

Details

Spayed or Neutered,

Story

Thanks to Kia and Petfinder, Billy's adoption fee is $0!! Introducing Billy and some fun facts from his foster dad! How is Billy with other dogs? He is good! He loves to play with them! How is Billy with kids? He is great with kids! Is Billy potty trained? Definitely potty trained! Is Billy crate trained? Yes! He will go right in by himself if he sees you making his kong!! What tricks does Billy know? Billy knows sit, lay down, paw and occasionally roll over! What is Billy's favorite activity? Billy loves walks, car rides, playing fetch, tug of war, honestly it doesn't matter to him he just truly wants to be with his human doing anything!! If you're interested in meeting Billy, please visit our website to learn about our adoption process and to fill out an application, www.gatewaypets.org/adopt All of our dogs and cats will be micro-chipped, spayed or neutered, and up-to-date on vaccinations at the time of adoption. For more photos of Bully, follow us on Facebook Gateway Pet Guardians and Instagram @gatewaypets ... #gpgBilly. To view other adoptable pets from our shelter, please visit, www.gatewaypets.org/adopt Gateway Pet Guardians is proud to offer a variety of mixed breed dogs available for adoption. However, please keep in mind that we rarely know the genetic background of the animals we rescue and, as such, we cannot guarantee the exact breed combinations found within this dog. However, we do not know his/her actual genetic makeup. Just know that this dog is probably a variety of several different breeds that have combined to create one very amazing and unique animal

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These pups are in O Fallon, Missouri too!

Below are our newest added Mastiffs available for adoption in O Fallon, Missouri. To see more adoptable Mastiffs in O Fallon, Missouri, use the search tool below to enter specific criteria!

Scarlett Jo

Bullmastiff

Female, Adult

Ofallon, MO

Size

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

Details

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

Story

Scarlett is a very loving snuggler, who's great with my girls and all people she comes in contact with, also good with large dogs. Unfortunately, ever since my older dog Sarge died last year, she's become aggressive towards small dogs. She has never mamed, growled or even barked, but she has grabbed them. Animal control has never been called or involved and she's never hurt one of them, but because of her size and strength she's pulled me and my daughters to the ground several times. This is the hardest decision I’ve ever had to make but I have to think of what’s best for her and us. Scarlett is such a lover and would be an awesome addition to any family home with a fenced in back yard, and even big dogs for her to play with, unfortunately I do not and cannot have a fence, so she’s not able to get her exercise and go for walks now or go to the dog park and play like she used to. Please help me find as loving of a home as what she has and deserves.

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Marmaduke

St. Bernard

Male, Adult

Lake Saint Louis, MO

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,

Story

Marmaduke is a sweet, loving, super chill St. Bernard, about 5 yrs old who came to us from a horrific hoarding situation. Marmaduke is a friendly and lazy dog who loves everyone he meets. He loves snuggling with his people and would be perfectly happy lounging around, getting belly rubs and being loved! He is a great sleeper and prefers to sleep on the floor next to his people. He has really missed having human connection so plan on him being by your side! He really thinks getting pets and hugs are the best! Marmaduke does require a fenced yard (no electric fences). He needs access to the outdoors where he can be contained in a safe environment where he won’t be able to wander off. He is not apartment appropriate as he weights 123 lbs and would certainly be over a weight limit! Marmaduke does love other dogs so a fur friend would be wonderful for him. He loves the company of other dogs so he’d love a friend to play with and snuggle. Marmaduke doesn’t know what toys belong to humans and what he’s allowed to play with. Toys are very new to him. Because of this, older kids who are not still playing with stuffed animals and toys would be fine for him. He’s a really sweet, loving, happy boy who has really acclimated well to being an inside, family dog! If you can provide Marmaduke the home with a fenced yard, lots of love and walks every now and then, please apply to meet him at www.luckychancerescue.com/adoption-aplication PLEASE NOTE: We do not do out of state adoptions. You must apply on our website if you'd like to meet Marmaduke. April 16, 2024, 11:13 am

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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in O Fallon, Missouri.

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Mastiff puppies and dogs in O Fallon, Missouri

Learn More:

Adopt a Mastiff near you in O Fallon, Missouri

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near O Fallon, Missouri

These Mastiffs are available for adoption close to O Fallon, Missouri.

These pups are in O Fallon, Missouri too!

Below are our newest added Mastiffs available for adoption in O Fallon, Missouri. To see more adoptable Mastiffs in O Fallon, Missouri, 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 O Fallon, Missouri

Mastiff shelters & rescues in O Fallon, Missouri

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Want to learn more about adopting a Mastiff puppy or dog?

Mastiff basics

Mastiff basics

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Mastiff puppies and dogs in O Fallon, Missouri

Learn More:

Adopt a Mastiff near you in O Fallon, Missouri

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near O Fallon, Missouri

These Mastiffs are available for adoption close to O Fallon, Missouri.

These pups are in O Fallon, Missouri too!

Below are our newest added Mastiffs available for adoption in O Fallon, Missouri. To see more adoptable Mastiffs in O Fallon, Missouri, 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 O Fallon, Missouri

Mastiff shelters & rescues in O Fallon, Missouri

Looking for a specific shelter or rescue?

Want to learn more about adopting a Mastiff puppy or dog?

Mastiff basics

Mastiff basics