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Mastiff puppies and dogs in Lone Tree, Colorado

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

Adopt a Mastiff near you in Lone Tree, 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 Lone Tree, Colorado

These Mastiffs are available for adoption close to Lone Tree, Colorado.
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Tenille

Mastiff

Female, 3 yrs 11 mos
Aurora, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Not good with kids, Not good with dogs, Not good with cats,
Story
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CROMOLY

Mastiff

Male, Young
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with kids, Not good with dogs, Not good with cats, Spayed or Neutered,
Story
June 17, 2025, 11:08 am

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Sara

Mastiff

Female, 2 mos
Denver, 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
Hi there, I'm Sara! I'm a real goofball, let me tell you. My siblings and I were just out exploring the world, when we accidentally ended up in the back of some ladys car, but she brought us to this fun place they call a foster mom. It's not too bad here, but I'm ready for my next adventure! I'm sweet, friendly, and pretty smart if I do say so myself. I've got energy to burn and love to play, but I also give the best cuddles. I'm brave and independent, but I promise to always make you laugh. If you're looking for a fun-loving, playful, and cuddly companion, I'm your girl! I am currently being fostered in San Anonio Tx ##2422047##

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No photo available for Thor

Thor

Mastiff

Male, 2 mos
Denver, 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
Hi, I'm Thor! I may be a puppy, but I've got a big heart. I love to play, whether it's a game of fetch or just a good old belly rub. But don't let my playful side fool you, I'm also quite the cuddler. I can be a bit shy at first, but once I get to know you, we'll be the best of friends. I'm smart too, I learn quickly and I'm always eager to please. I'm mellow and gentle, perfect for those lazy Sunday afternoons. Most importantly, I'm loyal. I promise to be your best friend, your confidante, your forever companion. Why should you adopt me? Well, I believe everyone needs a loyal friend who will always be there for them, and that's me. I promise to fill your life with joy, laughter, and unconditional love. So, what do you say? Will you be my forever home? Im currently being fostered in San Anotnio Tx ##2422048##

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Mark

Mastiff

Male, 2 mos
Denver, 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
Hi there, I'm Mark! I'm just a puppy, but I've got a big personality. I'm sweet and friendly, always ready to meet new friends. I'm curious too, the world is such an exciting place! I'm gentle and mellow, I enjoy quiet moments just as much as playtime. I can be a little shy, but once I get to know you, I'm all cuddles. I'm also funny and smart, I love learning new tricks and making people laugh. Most importantly, I'm playful. I love to run around and have fun. But at the end of the day, I'm just a cuddly little guy looking for a forever home. I promise to be the best friend you've ever had. Adopt me and let's start our adventure together! ##2422035##

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Special Needs
Photo of Sabrina

Sabrina

Mastiff American Bulldog

Female, 6 yrs 9 mos
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Not good with kids, Not good with dogs, Not good with cats, 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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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Lone Tree, Colorado.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Lone Tree, Colorado

Bullmastiffs in Lone Tree, Colorado Neapolitan Mastiffs in Lone Tree, Colorado Saint Bernards in Lone Tree, Colorado

Mastiff shelters & rescues in Lone Tree, Colorado

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

Here are a few organizations closest to you:

Rescue

40.8 miles

All Breed Rescue & Training

410 1/2 E Fillmore Street, Colorado Springs, CO 80907

Pet Types: dogs

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Rescue

10.9 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

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Shelter

15.4 miles

Dumb Friends League

2080 S Quebec St, Denver, CO 80231

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

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Rescue

19.9 miles

Red Fern Animal Rescue

Denver, CO 80220

Pet Types: cats, dogs

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Rescue

21.2 miles

Ace of Hearts - CO Transport Stop

711 Walnut St, Boulder, CO 80203

Pet Types: dogs

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Rescue

30 miles

CLAWA Animal Rescue

9595 Pecos St, 529, Thornton, CO 80260

Pet Types: 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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