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Mastiff puppies and dogs in Denver, Colorado

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

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

Adopt a Mastiff near you in Denver, Colorado

These Mastiffs are available in Denver, Colorado.
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, 7 yrs 3 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.

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We'll also keep you updated on Huckleberry's adoption status with email updates.
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Huckleberry

Mastiff

Male, 8 mos
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
I’m Huckleberry, a 7 month old male Mastiff mix. My foster adds: Pup Huckleberry has arrived! This handsome boy is adjusting to his surroundings, and working on staying calm and potty-training. He did great meeting an early teen recently and loved the attention, tho his puppy mouthing may be a bit much for younger kids. ********PLEASE READ BELOW PRIOR TO EMAILING IN**********If you are interested in adopting this dog or any other from our rescue, please go to https://www.hobocare.org/adopt to review our home requirements and fill out an application. Please do not email and ask for more information on how to adopt, all the information is already available online. The information you see here is all that is currently available about this dog. No boxers are adopted without a completed application and home check. Thank you! ##2619848##

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Or, how about these Mastiffs in cities near Denver, Colorado

These Mastiffs are available for adoption close to Denver, Colorado.
We'll also keep you updated on Sabrina's adoption status with email updates.
Special Needs
Photo of Sabrina

Sabrina

Mastiff American Bulldog

Female, 7 yrs 3 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.

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

Huckleberry

Mastiff

Male, 8 mos
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
I’m Huckleberry, a 7 month old male Mastiff mix. My foster adds: Pup Huckleberry has arrived! This handsome boy is adjusting to his surroundings, and working on staying calm and potty-training. He did great meeting an early teen recently and loved the attention, tho his puppy mouthing may be a bit much for younger kids. ********PLEASE READ BELOW PRIOR TO EMAILING IN**********If you are interested in adopting this dog or any other from our rescue, please go to https://www.hobocare.org/adopt to review our home requirements and fill out an application. Please do not email and ask for more information on how to adopt, all the information is already available online. The information you see here is all that is currently available about this dog. No boxers are adopted without a completed application and home check. Thank you! ##2619848##

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

Fat Boy

Mastiff Labrador Retriever

Male, Young
Golden, CO
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Spayed or Neutered,
Story
Meet Fat Boy!Fat Boy is a young, energetic guy with a whole lot of joy packed into him. He's full of excitement and loves to bounce around. Playful at heart, Fat Boy adores stuffed toys and can turn any space into a fun romp. With his happy personality and youthful spirit, he's sure to bring laughter and love to any home lucky enough to have him! He is recommended for a family with older or no children at this time. Primary Color: Black Secondary Color: White Weight: 80.52 Age: 1yrs 1mths 0wks

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We'll also keep you updated on Tenille's adoption status with email updates.
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Tenille

Mastiff

Female, 4 yrs 6 mos
Aurora, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
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Story
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We'll also keep you updated on Bell's adoption status with email updates.
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Bell

Mastiff

Female, Adult
Granby, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Please call the animal shelter to learn more about Bell. She is a great dog but just needs the right person. 970-887-2988

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These pups are in Denver, Colorado too!

Below are our newest added Mastiffs available for adoption in Denver, Colorado. To see more adoptable Mastiffs in Denver, Colorado, use the search tool below to enter specific criteria!
We'll also keep you updated on Zen's adoption status with email updates.
Photo of Zen

Zen

Neapolitan Mastiff Mastiff

Male, 7 yrs 3 mos
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Not good with dogs, Needs experienced adopter, Spayed or Neutered, Shots are up-to-date,
Story
Zen is a 6-year-old male Neo Mastiff mix who’s as big-hearted as he is big in stature. Rescued from a shelter after his previous owners surrendered him for being “too big,” Zen is now on the hunt for his forever home where he can truly shine. Zen is a sweet, playful giant with a lot of energy for his breed. He’s very intelligent and learns quickly, making him a joy to train. However, Zen prefers to be the only dog in the home; he can get jealous and aggressive with other dogs, wanting all the attention for himself. When he's your one and only, he’s incredibly loving and will shower you with affection. Though he’s not reactive to other dogs on leash, Zen does best in a home without canine companions. He appreciates careful introductions to new people, especially those who approach unexpectedly. Zen’s ideal owner will be someone experienced with his breed and capable of continuing his training and socialization. If you’re ready to welcome a devoted and energetic companion into your life, Zen could be the perfect fit. He’s looking for a loving home where he can be the center of attention and enjoy all the love he has to give!

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

Babs

St. Bernard

Female, 3 yrs 8 mos
Denver, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs,
Story
Babs is an absolute sweetheart at 18 months young. She came in after her owner decided her energy no longer matched his own. She is a pretty active girl that needs someone to continue to work on training with her. Her current foster mama says she is very sweet little tornado 🌪 💜. She weighs in around 110 lbs and still needs to be spayed and have her gastropexy before she is ready to be adopted out. However, she is available to meet. She does have some resource guarding we are working through when it comes to food, and she is still learning how to be polite on a leash.

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

Mortimer

St. Bernard Shepherd (Unknown Type)

Male, 5 yrs 5 mos
Denver, CO
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
Hi there!  Mortimer here, checking in after arriving in Colorado! Im between 1 and 2 years old (no one ever told me my real birthday so the nice doctor at the vet's office took a guess) and the rescue people asked me to tell you a little bit about myself. I love tug of war!  I figured i would start with that since its really important that my new home like to play that with me.  I also like to play with other dogs, but can get a little scared if they are super loud and in my face at first.  I am "crate-trained" whatever that means, and enjoy these things called "leash walks" where i get to go out and smell and see new things.  My foster parents say that i have decent leash "manners". I've seen a cat a few times, and wasn't overly interested in it, but i have never lived with one, so I don't know how i would feel about that. I ended up in Colorado after someone dumped me in a very rural part of new Mexico.  A nice lady there found me and gave me food and water and shelter which was very nice, but she couldn't keep me so she found some nice people in Colorado to help me find a new forever home!  If i sound like the kind of dog you would like to hang out with fill out the application below and be sure to mention my name! If you are interested in fostering or adopting Mortimer, please fill out an adoption application at gotdrool.org

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Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Denver, Colorado.

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Mastiff puppies and dogs in nearby cities

Mastiff Puppies near me Mastiff in Arvada, CO Mastiff in Aurora, CO Mastiff in Boulder, CO Mastiff in Brighton, CO Mastiff in Broomfield, CO Mastiff in Castle Rock, CO Mastiff in Centennial, CO Mastiff in Cherry Hills Village, CO Mastiff in Commerce City, CO Mastiff in Edgewater, CO Mastiff in Englewood, CO Mastiff in Erie, CO Mastiff in Federal Heights, CO Mastiff in Firestone, CO Mastiff in Fort Lupton, CO Mastiff in Frederick, CO Mastiff in Golden, CO Mastiff in Greenwood Village, CO Mastiff in Lafayette, CO Mastiff in Lakewood, CO Mastiff in Littleton, CO Mastiff in Lone Tree, CO Mastiff in Longmont, CO Mastiff in Louisville, CO Mastiff in Northglenn, CO Mastiff in Parker, CO Mastiff in Sheridan, CO Mastiff in Superior, CO Mastiff in Thornton, CO Mastiff in Westminster, CO Mastiff in Wheat Ridge, CO

Related breeds in Denver, Colorado

Bullmastiffs in Denver, Colorado Neapolitan Mastiffs in Denver, Colorado Saint Bernards in Denver, Colorado

Mastiff shelters & rescues in Denver, Colorado

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

Here are a few organizations closest to you:

Rescue

6 miles

Ace of Hearts Dog Rescue - CO Transport Stop

711 Walnut St, Boulder, CO 80203

Pet Types: dogs

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Rescue

6.7 miles

Ho-Bo Care Boxer Rescue

Denver, CO 80209

Pet Types: dogs

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Shelter

7.8 miles

Foothills Animal Shelter

580 McIntyre St., Golden, CO 80401

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

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Rescue

15.9 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

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Shelter

49.2 miles

Grand County Animal Shelter

3475 CR 57, Granby, CO 80446

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

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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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