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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.
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No photo available for Sabrina

Sabrina

Mastiff American Bulldog

Female, 7 yrs 6 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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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
No photo available for Sabrina

Sabrina

Mastiff American Bulldog

Female, 7 yrs 6 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 Cooper's adoption status with email updates.
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Cooper

Mastiff

Male, Young
Commerce City, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
About Cooper Cooper has been part of our family for almost 4 years, and he is truly an amazing dog. He is very friendly, loving, and enjoys being around people. He is well-behaved and fully house-trained — he knows to do his business outside. We made the difficult decision to rehome him some time ago due to severe allergies in our youngest child. Thankfully, he stayed within our extended family, so we have always known he was safe and loved. Unfortunately, due to health reasons, the family member who has been caring for him can no longer keep him. Because of this, we are now looking for a new loving and responsible home for Cooper. He deserves a family that can give him the attention, care, and love he is used to. He is a wonderful companion and will make a great addition to the right home.

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

Mastiff

Male, 2 yrs
Aurora, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Spayed or Neutered,
Story
Say hello to Fang! Fang is a friendly and goofy large breed dog. He warms up quickly to new people and loves playing with toys and snacking on treats. Fang is unaware of is size will sometimes jump on people when he`s excited, and would benefit from learning some manners. Fang knows sit and down and is eager to learn more! Come see if this happy boy is the dog for you!

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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 9 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 Fang's adoption status with email updates.
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Fang

Mastiff Shepherd (Unknown Type)

Male, Adult
Parker, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Meet Fang, a Mastiff mix with a heart of gold and the most intuitive soul you’ll ever encounter. Fang is the ultimate "gentle giant" who has reached his glory days and is looking for a couch to call his own. Fang is incredibly smart and acts as a loyal alert dog for the home. He is trained off and on lease and is naturally defensive of women. While he sounds intimidating to a stranger, he’s actually a total "scaredy-cat" who just wants to feel safe and loved. He surprisingly loves cats and enjoys a good game of tug-of-war. As he’s gotten older, his back legs get tired a bit faster, so he prefers short, leisurely strolls over long hikes. He’s a professional lounger who will happily nap on the sofa all day. He has been lovingly spoiled! His favorites include chicken and any kind of cheese. We’ve recently welcomed a new baby into our family, and we’ve realized we can no longer give Fang the focused attention and environment he deserves.

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

Mastiff

Female, 2 yrs 5 mos
Longmont, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
This dog is recommended for a home with older children

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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 6 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 Sailor's adoption status with email updates.
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Sailor

St. Bernard

Female, Young
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained, Shots are up-to-date,
Story
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We'll also keep you updated on Wizard's adoption status with email updates.
Photo of Wizard

Wizard

St. Bernard

Male, 1 yr 7 mos
Denver, 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
Wizard is a 1½-year-old Saint Bernard with a big body, big energy, and an even bigger heart. This handsome boy is still very much a puppy at heart and is looking for a patient adopter who can help him learn the skills he missed early in life. Wizard is crate trained and house trained, but he’s still working on leash manners and impulse control. He can be mouthy when excited, though this is playful behavior — not aggression. With consistency, structure, and positive training, Wizard has tremendous potential to grow into a wonderful companion. He enjoys other dogs and generally does well with them, especially female dogs who can match his playful style. Because of his size and enthusiasm, Wizard would do best in a home with teens 16+ and adults who can safely manage a large, energetic dog. Wizard is searching for a home willing to invest time, patience, and training into helping him become the best version of himself. In return, you’ll get a loyal, affectionate giant who truly wants to connect with his people. If you’re ready to guide a young dog who just needs direction, Wizard may be your perfect match!

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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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Shelter

15.9 miles

Aurora Animal Shelter

15750 E. 32nd Ave., Aurora, CO 80011

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

32.7 miles

Longmont Humane Society

9595 Nelson Road, Building G, Longmont, CO 80501

Pet Types: cats, dogs, rabbits, 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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