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Mastiff puppies and dogs in Brighton, Colorado

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

Adopt a Mastiff near you in Brighton, 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 Brighton, Colorado

These Mastiffs are available for adoption close to Brighton, Colorado.
We'll also keep you updated on Effie's adoption status with email updates.
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Effie

Mastiff

Female, Young
Denver, 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
Meet Effie, 1 year and 2 month old Mastiff mix who has a healthy appreciation for both naps and play time! She is a bit timid at first, but warms up very quickly. Effie is still young, so she is fairly quick to train and to learn new things. Effie is an amazing, kind dog - She is good with cats, dogs, and kids. After adopting Effie from the Humane Society, we discovered our senior cat was having an allergic reaction to her that worsened his pre-existing medical condition. For the sake of our cat’s health, we have made the difficult decision to find a new home for Effie. Effie thrives in a home with someone who can snuggle, play, and spend quality time with her.

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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 ZEUS's adoption status with email updates.
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ZEUS

Mastiff

Male, Senior
Denver, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Zeus is seeking a foster home until 11/30. Last day to find foster is 11/7.Owner reports: Friendly,always follows owner around, loves cuddles, nervous around other animals as he was attacked by a dog. Is nervous around strangers, seem to do better with women as opposed to men. House trained.No resource housing.Diet and feeding: Used to eating 2-3 cans of wet food a day, and goes out about 2 times a day. He has also been eating dry kibble in shelter just fine.Toys & Enrichment: Does not seem to care for toys too much, does like shreddable enrichment with treats inside.Sleeping arrangements: On a blaket or towel on the floor, paces if not given one.Commands: Sit (sientate), Paw (mano), lay down (acuestate) - family speaks spanish.Dogs: Is nervous at first, but does well with an appropriate dog. Cats: He is afraid of cats.Kids: Allows pets but keeps his distance. Alone time: Does well, not destructibe and no accidents.Crate-trained. Not destructive, No escape. December 8, 2025, 5:22 pm

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

Mastiff

Male, 4 yrs 1 mo
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
Zeus is a big boy with lots of love to give, so if you`re looking for a 100 pound lap dog, look no further! Zeus is looking to be the center of attention in his next home and not share the spotlight with other animals, so we are requiring he go to a home without cats or other dogs. And while he`s done well with kids, his size makes it easy for him to accidentally knock over little ones! Because of that, HSBV will only rehome him to a family either without children or with children over the age of 10.

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

Mastiff American Bulldog

Female, Adult
Golden, CO
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
If you've been searching for a dog who will make you smile every single day, say hello to Maggie! This bright-eyed, tail-wagging sweetheart is the perfect mix of playful energy and loving companionship.Maggie is an active, joyful, and endlessly curious pup who's always ready for fun. Whether it's a game of fetch, playing with other dogs, or exploring a new trail, she's happiest when she's moving and sharing life's adventures with her favorite humans. Primary Color: White Secondary Color: Black Weight: 71.6 Age: 4yrs 2mths 3wks

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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 Brighton, Colorado.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Brighton, Colorado

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

Mastiff shelters & rescues in Brighton, Colorado

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

Here are a few organizations closest to you:

Rescue

10.9 miles

Ace of Hearts Dog Rescue - CO Transport Stop

711 Walnut St, Boulder, CO 80203

Pet Types: dogs

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Shelter

13.5 miles

Humane Colorado

2080 S Quebec St, Denver, CO 80231

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

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Rescue

17.4 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

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Shelter

21.3 miles

Humane Society of Boulder Valley

2323 55th Street, Boulder, CO 80301

Pet Types: cats, dogs, small animals

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Shelter

21.4 miles

Foothills Animal Shelter

580 McIntyre St., Golden, CO 80401

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

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Rescue

23.5 miles

L.O.L.A.'S Rescue

6005 S. Taft Way, Littleton, CO 80127

Pet Types: dogs

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Rescue

42.1 miles

Big Bones Canine Rescue

Windsor, CO 80550

Pet Types: dogs

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Rescue

48.2 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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