Prepping for pet parenthood?
There's a lot to learn when you have a new pet. Our sister brand, The Wildest, is here to support you—with new pet checklists, virtual training, and expert guides. Sign up for free.
Close button icon
Adopt

Mastiff puppies and dogs in Saint Peters, Missouri

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

Picture of Mastiff

Adopt a Mastiff near you in Saint Peters, 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 Saint Peters, Missouri

These Mastiffs are available for adoption close to Saint Peters, Missouri.
Photo of VAN GOGH

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!
Photo of SWIFFER

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!
Photo of DUSTY

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!
Photo of Charley

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!
Photo of Finrir

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
Photo of Billy

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

Search for a Mastiff puppy or dog

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

Mastiff puppies and dogs in nearby cities

Related breeds in Saint Peters, Missouri

Mastiff shelters & rescues in Saint Peters, Missouri

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

Here are a few organizations closest to you:

Shelter

18.6 miles

Animal Protective Association of Missouri

1705 South Hanley Road, St. Louis, MO 63144

Pet Types: cats, dogs, rabbits, small animals

More an arrow icon

Shelter

18.6 miles

Animal Protective Association of Missouri

1705 South Hanley Road, St. Louis, MO 63144

Pet Types: cats, dogs, rabbits, small animals

More an arrow icon

Shelter

18.6 miles

Animal Protective Association of Missouri

1705 South Hanley Road, St. Louis, MO 63144

Pet Types: cats, dogs, rabbits, small animals

More an arrow icon

Shelter

24.3 miles

CARE STL

2700 Walnut Place, St. Louis, MO 63103

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

More an arrow icon

Rescue

28.9 miles

Gateway Pet Guardians

725 N 15th St, East ST Louis, IL 62205

Pet Types: cats, dogs

More an arrow icon

Rescue

28.9 miles

Gateway Pet Guardians

725 N 15th St, East ST Louis, IL 62205

Pet Types: cats, dogs

More an arrow icon

Shelter

30.6 miles

PALS Animal Shelter of Lincoln County, Missouri

4287 Hwy 47 West, Hawk Point, MO 63349

Pet Types: cats, dogs

More an arrow icon

Shelter

32.4 miles

Helping Strays of Monroe County

4221 Hanover Rd., Columbia, IL 62236

Pet Types: cats, dogs

More an arrow icon

Shelter

32.4 miles

Helping Strays of Monroe County

4221 Hanover Rd., Columbia, IL 62236

Pet Types: cats, dogs

More an arrow icon

Shelter

32.4 miles

Helping Strays of Monroe County

4221 Hanover Rd., Columbia, IL 62236

Pet Types: cats, dogs

More an arrow icon

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!

magnifying glass with cat and dog

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

clipboard with list

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.

Learn More an arrow icon