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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 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 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.

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We'll also keep you updated on SCOOBY-DOO's adoption status with email updates.
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SCOOBY-DOO

Mastiff Husky

Male, Young
Federal Heights, 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, Shots are up-to-date,
Story
Hello my Name is Scooby-Doo I'm 2 Yrs Old I'm a Great and Very Loving Dog, However I'm a litte Hard Headed And Sometimes Times Stubborn. I'm Very Playfully, I Frequently Go to the Westminster Open Space Dog Park near Stanley Lake, I run and play with all the other Dogs making Friends and having a Wonderful time, Never Showing any Aggression towards the other Dogs or the other people there, I'm Well Tempted. My Eyes are Ghost Blue, I get that From My Husky Father and My Mother is Mastiff. I'm looking For Great new Home with tons of Love, And a Big Back yard to run And Play, All my Vaccination Are Current Threw The Spur Clinic, I Am Also Fixed and House Trained. PLEASE Consider Being My New Family and Home , Thank you

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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 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.

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

SCOOBY-DOO

Mastiff Husky

Male, Young
Federal Heights, 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, Shots are up-to-date,
Story
Hello my Name is Scooby-Doo I'm 2 Yrs Old I'm a Great and Very Loving Dog, However I'm a litte Hard Headed And Sometimes Times Stubborn. I'm Very Playfully, I Frequently Go to the Westminster Open Space Dog Park near Stanley Lake, I run and play with all the other Dogs making Friends and having a Wonderful time, Never Showing any Aggression towards the other Dogs or the other people there, I'm Well Tempted. My Eyes are Ghost Blue, I get that From My Husky Father and My Mother is Mastiff. I'm looking For Great new Home with tons of Love, And a Big Back yard to run And Play, All my Vaccination Are Current Threw The Spur Clinic, I Am Also Fixed and House Trained. PLEASE Consider Being My New Family and Home , Thank 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 7 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 Sully's adoption status with email updates.
Photo of Sully

Sully

Mastiff Boxer

Male, 1 yr
Mead, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
We are so happy to introduce you to Sully! Sully is an 87 ish lbs, 1 year old, happy boy! We suspect he’s a Mastiff/Boxer mix. Sully is so friendly and boisterous. He loves to run and play with his canine companions. When it’s time to chill, he will calmly lay on a dog bed and chew his toys. Sully knows a few commands: sit, down, shake, drop it, and wait. He’s so polite (but sometimes he gets really happy and jumps up on you to say “hi”) and affectionate — please don’t stop petting him, that’s just rude. Sully is house trained, crate trained, walks well on a leash, and loves a good game of fetch. If you’re missing an over-sized, playful, teddy bear, he’s your boy! Sully is being fostered in Mead, Colorado. *We require all adopters to come to Colorado to adopt. *We do not transport dogs.* You can view this wonderful dog at https://www.milehighcanine.org/post/dogs/sully/. You can apply for our wonderful dogs at https://www.milehighcanine.org/adopt/adoption-application/.

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

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 Charlie's adoption status with email updates.
Photo of Charlie

Charlie

Bullmastiff

Male, 3 yrs
Denver, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, House-trained, Shots are up-to-date,
Story
Charlie is a big boy with an even bigger heart. This handsome bullmastiff mix may seem imposing at first glance, but don’t let his size fool you - he’s all softness on the inside. Calm, gentle, and sweet as can be, he’s happiest just being near his people. Charlie loves taking long, luxurious naps, curling up at your feet while you work, cook, or watch TV, and leaning in for full-body cuddles. So far, he hasn’t met a human or dog he doesn’t like. He’s fully house trained and doesn’t seem to mind separation. And he’s working on his commands, which should be a breeze, considering how much he loves treats. If you’re looking for a mellow, affectionate companion, Charlie might just be your perfect match. Come meet this gentle giant - he’s ready to snuggle his way into your heart. ##2667155##

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

Pinto

St. Bernard Great Pyrenees

Male, 2 yrs
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, Shots are up-to-date,
Story
Meet Pinto! Pinto is a sweetheart with the gentlest soul. Since arriving in foster care, he’s been taking time to decompress and learn that the world can be a safe and loving place. He can be a little timid with new or uncertain situations, but each day his confidence grows — and it’s been such a joy to watch his personality shine a little brighter every day. This quiet, gentle boy absolutely loves affection. Once he knows you, he melts into cuddles and happily leans in for pets. Pinto is the kind of dog who bonds deeply and will be your calm, loyal companion through it all. He’s dog-friendly, cat-friendly, potty trained, and crate trained — a well-mannered gentleman who enjoys a peaceful environment. Pinto would thrive in a patient, loving home that will continue to help him build confidence at his own pace. If you’re looking for a sweet, soulful companion who just wants to love and be loved, Pinto may be your perfect match.  ##2666454##

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

Zen

Neapolitan Mastiff Mastiff

Male, 7 yrs 5 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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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

15.9 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

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Rescue

37.8 miles

Mile High Canine Rescue, Inc.

Mead, CO 80542

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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