Adopt
Rehome
Menu Hamburger Icon

Mastiff puppies and dogs in O Fallon, Missouri

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

Picture of Mastiff

Learn More:

Adopt a Mastiff near you Mastiff in cities near O Fallon, Missouri Other pups in O Fallon, Missouri Search for a Mastiff puppy or dog near you Browse Mastiff puppies and dogs in nearby cities Browse related breeds in O Fallon, Missouri Mastiff shelters and rescues in O Fallon, Missouri Learn more about adopting a Mastiff puppy or dog

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.
We'll also keep you updated on Daisy's adoption status with email updates.
Photo of Daisy

Daisy

Mastiff Terrier (Unknown Type, Medium)

Female, Young
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Shots are up-to-date,
Story
Meet Daisy!Daisy is a 1-year-old, 65-pound Mastiff mix with a heart as big as her paws! Rescued as a stray in poor condition, Daisy has been thriving in her foster home and steadily gaining weight. She’s blossomed into a sweet, loving girl who adores bedtime cuddles and following her humans everywhere—they’ll never be alone with her around!Still a playful pup, Daisy has plenty of energy and is house trained and still learning the ropes of training like not jumping on you in excitement. She’s a smart cookie and eager to please, so with patience and consistency, she’ll become an amazing companion. Daisy loves playing with bigger, higher-energy dogs, like her foster family’s huskies, and has shown promise around cats. While she’s still learning to respect feline boundaries, she’s making great progress.Watching Daisy discover toys and grow into her happy, playful self is nothing short of heartwarming. She’s ready to bring her big heart and loyal spirit into a forever home that will love her unconditionally. Could Daisy be your perfect match?IMPORTANT: Please read all below, especially if you live outside of Texas, which is where our rescue is located.Apply to adopt on our website: https://www.charmingpetrescue.org/adoptAll of our animals are spayed/neutered, microchipped, and up to date on shots.ALL of our animals are located in Boerne, TX, but transport after adoption is available to other states for a $300 fee for dogs or an additional fee varying by location for cats. If you are seeing our pets posted in your state, that's because you live near a transport stop, they are not currently at that location. Petfinder lists our pets as 'Out of Town' pets at other locations, and Adopt-a-Pet lists our location as a Transport stop. Those are currently the only options they offer to make this clear, so we put this description we've put at the bottom to explain it. You can read more about transport here: www.charmingpetrescue.org/transportWe understand transport is not an option for everyone, but we offer it at the cost we pay the transport company for those who wish to adopt from us.December 4, 2024, 3:44 pm

Learn More

Small right facing arrow
We'll also keep you updated on Bellatrix aka "Willow Eliza"'s adoption status with email updates.
Photo of Bellatrix aka "Willow Eliza"

Bellatrix aka "Willow Eliza"

Mastiff

Female, 7 yrs 1 mo
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Bella is big and beautiful with a personality to match. This six-year-old mastiff mix girl adores people, snuggles, pets, and attention. She is spayed and up-to-date on all her medical care and is heartworm-negative. Bella is a big girl, approximately 65 pounds, so while she is very good with people, she would be best with older kids who can keep up with her size. She is house-trained, and a fenced yard would be best since Bella is a large dog and likes to play. Bella likes her people so much she doesn't want to share and would do best as the only dog in her home. To meet Bella, visit istodaymydayrescue.org to fill out an application. Her adoption fee is $100.

Learn More

Small right facing arrow
We'll also keep you updated on Rita Ramen's adoption status with email updates.
Photo of Rita Ramen

Rita Ramen

Mastiff

Female, 3 yrs 4 mos
St. Louis, MO
Size
(when grown) -
Details
-
Story
Rita is a gentle giant that desperately wants a family to call her own. She can be shy meeting strangers, but she bonds very deeply with her people. She appears to be a guardian dog breed, perhaps Cane Corso and/or Great Dane, and weighs about 80 pounds. When outdoors Rita can be gregarious and outgoing with new people, but indoors she has been more shy toward strangers and has shown the desire to protect her people. Rita has lived in a house, including with another dog. She is affectionate, playful, smart, and very treat-motivated. Rita is a true gem for the right home!

Learn More

Small right facing arrow

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!
We'll also keep you updated on Marmaduke's adoption status with email updates.
long timer badge
Photo of Marmaduke

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. November 4, 2024, 1:05 pm

Learn More

Small right facing arrow

Search for a Mastiff puppy or dog

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

    an arrow icon
  • Columbus, OH
  • Columbus, OH
  • Columbus Grove, OH
  • Columbus Grv, OH

Sorry, we can’t find that location! Please try again.

    Age
    an arrow icon

Mastiff puppies and dogs in nearby cities

Mastiff Puppies near me Mastiff in Alton, IL Mastiff in Arnold, MO Mastiff in Ballwin, MO Mastiff in Berkeley, MO Mastiff in Bethalto, IL Mastiff in Black Jack, MO Mastiff in Brentwood, MO Mastiff in Bridgeton, MO Mastiff in Cahokia, IL Mastiff in Centreville, IL Mastiff in Chesterfield, MO Mastiff in Clayton, MO Mastiff in Columbia, IL Mastiff in Creve Coeur, MO Mastiff in Dardenne Prairie, MO Mastiff in Des Peres, MO Mastiff in East Alton, IL Mastiff in East Saint Louis, IL Mastiff in Ellisville, MO Mastiff in Eureka, MO Mastiff in Ferguson, MO Mastiff in Florissant, MO Mastiff in Godfrey, IL Mastiff in Granite City, IL Mastiff in Hazelwood, MO Mastiff in Jennings, MO Mastiff in Jerseyville, IL Mastiff in Kirkwood, MO Mastiff in Lake St Louis, MO Mastiff in Manchester, MO Mastiff in Maplewood, MO Mastiff in Maryland Heights, MO Mastiff in Olivette, MO Mastiff in Overland, MO Mastiff in Pacific, MO Mastiff in Pontoon Beach, IL Mastiff in Richmond Heights, MO Mastiff in Saint Ann, MO Mastiff in Saint Charles, MO Mastiff in Saint Louis, MO Mastiff in Saint Peters, MO Mastiff in Town and Country, MO Mastiff in Troy, MO Mastiff in Union, MO Mastiff in University City, MO Mastiff in Valley Park, MO Mastiff in Warrenton, MO Mastiff in Washington, MO Mastiff in Washington Pk, IL Mastiff in Webster Groves, MO Mastiff in Weldon Spring, MO Mastiff in Wentzville, MO Mastiff in Wildwood, MO Mastiff in Wood River, IL

Related breeds in O Fallon, Missouri

Bullmastiffs in O Fallon, Missouri Neapolitan Mastiffs in O Fallon, Missouri Saint Bernards in O Fallon, Missouri

Mastiff shelters & rescues in O Fallon, Missouri

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

Here are a few organizations closest to you:

Rescue

5 miles

Charming Pet Rescue - MO Transport Stop

St. Louis, MO 63303

Pet Types: dogs

More an arrow icon

Rescue

21.4 miles

Is Today My Day Rescue

St. Louis, MO 63139

Pet Types: dogs

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

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