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Mastiff puppies and dogs in Thornton, Colorado

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

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Adopt a Mastiff near you in Thornton, Colorado

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 Thornton, Colorado

These Mastiffs are available for adoption close to Thornton, Colorado.
We'll also keep you updated on Maya's adoption status with email updates.
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Maya

Mastiff

Female, 4 yrs 8 mos
Denver, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
Maya had been living in an orphanage outside Tijuana, Mexico- she was born and raised on the orphanage land. On the orphanage she played with dog friends, big and small, and kids of course! Maya is a total, sweetheart! She wanted us to add to her dating profile that she loves Mac & cheese and she does not love long walks on the beach- more like short cuddles on the couch. She has learned to use stairs in her foster home! In her foster home, Maya is still figuring out her place in the pack and seems a bit unsure of how to interact with other dogs. When she tries to play, she tends to be more focused on mouthing, jumping on, and humping in a way that comes across as dominant rather than playful, which can be a lil intimidating for other dogs & people. We can tell she really wants to play, but she needs to learn how to do it in a way that’s safe and appropriate. We’re working with her on this, but it’s something to consider if her future family has other dogs. Maya is being fostered in Foxfield, Colorado. ##2262848##
We'll also keep you updated on Sabrina's adoption status with email updates.
Special Needs
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Sabrina

Mastiff American Bulldog

Female, 6 yrs 4 mos
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Needs special attention, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Meet Sabrina, a gentle 6-year-old Mastiff mix who’s in need of a special forever home. Sabrina is living with mast cell tumors (MCT) due to cancer and is currently on medication to keep her as comfortable as possible. She requires a loving home that is prepared to offer her hospice care and a peaceful environment. Sabrina can be shy with new people and may give a warning growl or snap if approached when she’s not ready. However, once she builds trust, she becomes deeply affectionate and very attached to her people. She gets along well with mellow dogs and will thrive in a calm household where she can feel safe and loved. If you have a compassionate heart and are ready to provide a supportive and caring home for a special dog like Sabrina, you’ll find a loyal and loving companion in her.
We'll also keep you updated on Valentino's adoption status with email updates.
Photo of Valentino

Valentino

Mastiff Labrador Retriever

Male, 6 mos
Aurora, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Are you looking for a life-long love? I'm sure to make your heart skip a beat with these longing eyes! Hey there, I'm Valentino! I've had a rough start in life as my owners moved and decided to leave my brother and I behind. We don't let it bother us as we know we will find our forever homes soon. We look to be a mix of Mastiff/Lab but the shelter isn't sure. Will you paw-lease adopt me?  If you're interested in adopting me, fill out an adoption application online at www.polkcountyhumanesociety.org/adopt where you will also find a link to reserve me for an appointment. Some pets are in foster homes or may already have an appointment scheduled, so the appointment is important to make sure I will be available to meet you when you come. Polk County Humane Society is located in Bolivar, Missouri, but also makes transports to the Denver, CO, Des Moines, IA and St. Louis areas twice monthly. For potential adopters in those areas, we can do a virtual visit using FaceTime or another app. Just request an appointment using the same link, but note that you want the visit to be virtual. We will call you at the time of the visit once it is confirmed. For long distance transports to Colorado and Iowa, there is an additional $100 fee to cover the cost of the transport ($65) and a health certificate from a veterinarian ($35). For transports to St. Louis, the additional fee is $50 to help cover gas. Going that last mile home for our sweet pets! All of our pets are neutered or spayed, have vaccinations appropriate for their age, treated with flea/tick/heartworm prevention, dewormed and dogs are also microchipped. #adoptdontshop ##2287925##
We'll also keep you updated on Romeo's adoption status with email updates.
Photo of Romeo

Romeo

Mastiff Labrador Retriever

Male, 6 mos
Aurora, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Are you looking for a life-long love? I'm sure to make your heart skip a beat with these longing eyes! Hey there, I'm Romeo! I've had a rough start in life as my owners moved and decided to leave my brother and I behind. We don't let it bother us as we know we will find our forever homes soon. We look to be a mix of Mastiff/Lab but the shelter isn't sure. Will you paw-lease adopt me?  If you're interested in adopting me, fill out an adoption application online at www.polkcountyhumanesociety.org/adopt where you will also find a link to reserve me for an appointment. Some pets are in foster homes or may already have an appointment scheduled, so the appointment is important to make sure I will be available to meet you when you come. Polk County Humane Society is located in Bolivar, Missouri, but also makes transports to the Denver, CO, Des Moines, IA and St. Louis areas twice monthly. For potential adopters in those areas, we can do a virtual visit using FaceTime or another app. Just request an appointment using the same link, but note that you want the visit to be virtual. We will call you at the time of the visit once it is confirmed. For long distance transports to Colorado and Iowa, there is an additional $100 fee to cover the cost of the transport ($65) and a health certificate from a veterinarian ($35). For transports to St. Louis, the additional fee is $50 to help cover gas. Going that last mile home for our sweet pets! All of our pets are neutered or spayed, have vaccinations appropriate for their age, treated with flea/tick/heartworm prevention, dewormed and dogs are also microchipped. #adoptdontshop ##2287932##
We'll also keep you updated on Stewie's adoption status with email updates.
Photo of Stewie

Stewie

Mastiff

Male, Adult
Boulder, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Not good with cats, House-trained, Spayed or Neutered,
Story
Meet Stewie, a lovable 4-year-old Mastiff mix looking for his forever home! Weighing in at 100 pounds, Stewie is a gentle giant whose biggest desires are cuddles and food. His past has left him a little overzealous when it comes to treats, so homes with small children might not be the best fit for him. Stewie is incredibly loyal and sweet, always ready to protect and love his family. He gets along well with other dogs, but due to his size and energetic play style, smaller dogs might not be the best playmates for him. Unfortunately, Stewie is not suited for homes with cats. This big-hearted boy had a rough start in life, having been starved before coming to his current foster home. Despite this, he’s shown an unwavering capacity for love and loyalty. Stewie is waiting for a family that can give him the care, attention, and endless cuddles he deserves. Please consider giving Stewie a chance to be your loyal companion! If interested please go to our website and fill out an application. You can find our application under the adoptable dogs icon. Thank you for choosing Ozzie and Friends Rescue. We can’t wait to connect you with your new fur-ever friend.  https://www.ozzieandfriendsrescue.org/   Ozzie and Friends Rescue makes arrangements for all dogs adopted to be transported all across the Western United States, Canada and Midwest.   November 6, 2024, 2:40 pm
We'll also keep you updated on Jax's adoption status with email updates.
Photo of Jax

Jax

Mastiff Great Pyrenees

Male, 1 yr 3 mos
Boulder, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
What a cutie! This sensitive boy is looking for a patient adopter that can support him as he settles into his new home and environment. Jax has enjoyed spending time with other pups! If you have another dog and are interested in Jax, let us know! We are requiring a doggie meet and greet at the shelter to help ensure it`s a good fit. Additionally, at this time, HSBV will only rehome to a family without children or with children over the age of 10.

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Mastiff puppies and dogs in nearby cities

Related breeds in Thornton, Colorado

Mastiff shelters & rescues in Thornton, Colorado

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

Here are a few organizations closest to you:

Rescue

15.5 miles

Red Fern Animal Rescue

Denver, CO 80220

Pet Types: cats, dogs

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Rescue

16.2 miles

Ace of Hearts - CO Transport Stop

711 Walnut St, Boulder, CO 80203

Pet Types: dogs

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Shelter

16.4 miles

Polk County Humane Society (in Missouri) - Colorado Transport

3511 N Salida Court, Aurora, CO 80011

Pet Types: cats, dogs

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Shelter

17.1 miles

Humane Society of Boulder Valley

2323 55th Street, Boulder, CO 80301

Pet Types: cats, dogs, small animals

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Rescue

17.1 miles

Ozzie and Friends Rescue CO

Boulder, CO 80301

Pet Types: dogs

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Shelter

19.7 miles

Dumb Friends League

2080 S Quebec St, Denver, CO 80231

Pet Types: cats, dogs, horses, rabbits, small animals

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Rescue

21.8 miles

Moms and Mutts Colorado Rescue for Pregnant & Nursing Dogs

2721 W Oxford Ave, Suite 7, Sheridan, CO 80110

Pet Types: dogs

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Rescue

23.7 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

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Rescue

35.9 miles

Big Bones Canine Rescue

Windsor, CO 80550

Pet Types: dogs

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Rescue

41.8 miles

All Aboard Animal Rescue

Fort Collins, CO 80526

Pet Types: cats, dogs

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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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