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Mastiff puppies and dogs in Saint Clair, Missouri

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

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

These Mastiffs are available for adoption close to Saint Clair, Missouri.
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Daisy

Mastiff Terrier (Unknown Type, Medium)

Female, Young
St. Louis, MO
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
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.February 6, 2025, 10:16 pm

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ROOFUS

Mastiff

Male, 2 yrs
St. Louis, MO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Roofus is a very affectionate and playful dog who loves being around people. He is social and enjoys making new friends, always ready to greet everyone with a wagging tail. Come meet him today!

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BRYNN

Mastiff

Female, 4 mos
St. Louis, MO
Size
(when grown) Small 25 lbs (11 kg) or less
Details
Spayed or Neutered,
Story
Brynn is a fun-loving and active dog who’s always up for an adventure! Social and friendly, he loves being around people and exploring new places. His energetic personality makes him the perfect companion for an active home. Come meer her today!

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Photo of Bellatrix aka "Willow Eliza"

Bellatrix aka "Willow Eliza"

Mastiff

Female, 7 yrs 4 mos
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.

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Finrir

Mastiff Mixed Breed (Medium)

Male, 4 yrs 8 mos
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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Photo of Rutt

Rutt

Mastiff

Male, 4 yrs 8 mos
St. Louis, MO
Size
(when grown) -
Details
Spayed or Neutered,
Story
Hello, My name is Rutt but I will respond to almost anything if you say it nicely. I'm a 4 year old Mastiff mix that enjoys watching TV on the couch and mouthing material. I'm gentle when playing with humans, but have had a bad experience with a small dog and may not do well in homes with small animals. I am a stubborn speedbump that will follow you around to ensure you are not lonely. I am crate and potty trained. I do not like to get in the car, go on long walks, or get into high beds but that just means more times for cuddles on the couch. I may look intimidating but don't let looks fool you, I run from ballons and empty cups. I got my nails done today and the groomer raved about my good behavior. If you want to see if I'm a good fit, please reach out to Care. Love Rutt

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

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Mastiff puppies and dogs in nearby cities

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Related breeds in Saint Clair, Missouri

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Mastiff shelters & rescues in Saint Clair, Missouri

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

Here are a few organizations closest to you:

Rescue

37.3 miles

Charming Pet Rescue - MO Transport Stop

St. Louis, MO 63303

Pet Types: dogs

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Shelter

39 miles

Animal Protective Association of Missouri

1705 South Hanley Road, St. Louis, MO 63144

Pet Types: cats, dogs, rabbits, small animals

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Rescue

41.7 miles

Is Today My Day Rescue

St. Louis, MO 63139

Pet Types: dogs

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Shelter

46.1 miles

CARE STL

2700 Walnut Place, St. Louis, MO 63103

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

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Rescue

49.7 miles

Gateway Pet Guardians

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

Pet Types: cats, dogs

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Looking for a specific shelter or rescue?

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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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