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

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.
Photo of Nala

Nala

Mastiff Husky

Female, Adult
Erie, 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
We have had Nala since she was 8weeks old! She is now 5 will be 6 December 22nd! She is a cuddle bug for sure and loves to play! shes very smart and learns quickly. She is kennel trained, house trained and knows basic commands. She loves her paw held. She will literally be your best friend. She needs an active loving family. I have developed an allergy to her fur and while i have been able to manage it pretty well our work situation is also changing within the next few weeks and i dont want her home alone or kenneled for the majority of the day. She deserves better than that. She is up to date on shots and goes to her annual well checks. Shes also been to doggy boarding and does great. Shes great with other dogs big or small and loves kids. she loves anyone that loves her honestly.She is not spayed but probably should be.She will come with all of her things to her new home.

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No photo available for Sabrina

Sabrina

Mastiff American Bulldog

Female, 7 yrs 10 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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Photo of Tenille

Tenille

Mastiff

Female, 5 yrs 1 mo
Aurora, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
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Story
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Photo of Monique

Monique

Mastiff

Female, 5 mos
Littleton, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
Meet Monique!   Looking for a puppy who turns heads everywhere she goes? Meet Monique! At just 4½ months old, this gorgeous Mastiff girl is all oversized paws, goofy charm, and endless love. She’s incredibly sweet, whip-smart, and has the kind of personality that makes everyone she meets fall in love. Whether she’s playing, learning something new, or soaking up attention, Monique does everything with enthusiasm.   She’s going to be a BIG girl, so she’s looking for a family ready for giant-breed snuggles, loyal companionship, and a lifetime of adventures. If you’ve been dreaming of a gentle giant with a heart as big as her future, Monique is ready to make your house a home. ##2776213##

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Photo of Daphne

Daphne

Mastiff

Female, Young
Greeley, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, Not good with cats, Spayed or Neutered, Shots are up-to-date,
Story
Daphne, Mastiff mix, 1.5 yrs. 105 lbs. Daphne is friendly and calm. She’s good with other dogs and wants to play with them. No cats. She was found on a country road with a bowl and a bag of dog food. We want a home for her with someone home most of the time and another younger dog to hang out with. Call Cindy 970-353-1385

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Photo of Ombre

Ombre

Mastiff Boxer

Male, 4 yrs 8 mos
Fort Collins, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
This pups adoption fee has been partially sponsored by All Aboard or an All Aboard partner! The new adoption fee is reflected on the profile. IMPORTANT NOTE REGARDING THIS DOG: Ombre can be easily startled by new people and things. He is occasionally slower to meeting new people, especially men, and other dogs. Ombre has the potential to get overwhelmed easily and can resource guard. Ombre needs an adopter who is patient and willing to continue his training. Ombre is big guy with a lot of love to give! He came to us with a few quirks that his foster has been helping him work through and he is constantly making progress! He does need an experienced adopter who will be dedicated to continued positive reinforcement training and ongoing socialization. He has come a long way since his arrival in January 2023 and needs the perfect partner in crime to help him continue making progress! Ombre can be a bit skittish with new sounds or unexpected movements and can resource guard at times. He is occasionally slow to warm up to new men and other dogs, but not consistently! He can get overwhelmed in new high-activity environments, so continued socialization is a must. Ombre is very loving and curious, and acts like he is his foster's shadow. This loving boy is a classic case of a dog who is worth the effort! With the right, experienced adopter who is committed to setting him up for success through continued training and socialization, Ombre will absolutely blossom into his adopter's most dedicated friend! He is house and kennel trained. Playgroup - https://youtube.com/shorts/Brmr_wwiRKs ADOPTION FEE: $75 We are a foster-based rescue and do not generally have pups available to meet at our office except during adoption events on Saturdays. Interested in this pup? The first step is to complete our online application by clicking the "Apply for Adoption" button. Please note that we are only able to finalize adoptions at events for approved adopters. The earlier you apply, the better as it takes time to review and approve applications. We host adoption events almost every Saturday from 11:00am to 2:00pm at Petco in Fort Collins (2211 S College Ave. STE 200, Fort Collins, CO 80525)! Check our Instagram and/or Facebook page for info on where we will be hosting adoptions this weekend! All Aboard Animal Rescue saves dogs and puppies from high-kill shelters in other states. These pups are brought to Colorado, where they are required to be spayed or neutered - breaking the cycle of unwanted litters of puppies who end up as strays! Please consider supporting us in this mission by adopting, fostering, volunteering, or donating.

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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 Thornton, Colorado.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Thornton, Colorado

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

16.2 miles

Ace of Hearts Dog Rescue - CO Transport Stop

711 Walnut St, Boulder, CO 80203

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

28.1 miles

L.O.L.A.'S Rescue

6005 S. Taft Way, Littleton, CO 80127

Pet Types: dogs

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Rescue

32 miles

Homeward Bound Rescue of Colorado

Greeley, CO 80634

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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