Adopt
Rehome
Menu Hamburger Icon

Mastiff puppies and dogs in Boulder, Colorado

Looking for a Mastiff puppy or dog in Boulder, Colorado? Adopt a Pet can help you find an adorable Mastiff near you.

Picture of Mastiff

Learn More:

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

Adopt a Mastiff near you in Boulder, Colorado

These Mastiffs are available in Boulder, Colorado.
We'll also keep you updated on Zeus's adoption status with email updates.
Photo of Zeus

Zeus

Mastiff

Male, 4 yrs
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.

Learn More

Small right facing arrow

Or, how about these Mastiffs in cities near Boulder, Colorado

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

Zeus

Mastiff

Male, 4 yrs
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.

Learn More

Small right facing arrow
We'll also keep you updated on Maggie's adoption status with email updates.
Photo of Maggie

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 2wks

Learn More

Small right facing arrow
We'll also keep you updated on Effie's adoption status with email updates.
Photo of Effie

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.

Learn More

Small right facing arrow
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 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.

Learn More

Small right facing arrow
We'll also keep you updated on Stimpy's adoption status with email updates.
Photo of Stimpy

Stimpy

Mastiff Catahoula Leopard Dog

Female 6 mos
Littleton, CO
Size
(when grown) -
Details
Spayed or Neutered, Shots are up-to-date,
Story
Apply online at www.lolasrescue.com/available-animals please note if you utilize an Iphone there are two scroll bars on the side of the screen to scroll down through available animals.   You can email Info@lolasrescue.com anytime with questions pertaining to animals in our care.  ##2593147##

Learn More

Small right facing arrow
We'll also keep you updated on Tenille's adoption status with email updates.
Photo of Tenille

Tenille

Mastiff

Female, 4 yrs 5 mos
Aurora, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
-

Learn More

Small right facing arrow

These pups are in Boulder, Colorado too!

Below are our newest added Mastiffs available for adoption in Boulder, Colorado. To see more adoptable Mastiffs in Boulder, Colorado, use the search tool below to enter specific criteria!
We'll also keep you updated on Gina's adoption status with email updates.
Photo of Gina

Gina

Neapolitan Mastiff Cane Corso

Female, 7 mos
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs,
Story
She is 80% neopolitan mastiff and 20% Cane Corso. She is 7 Months old and 90 pounds. She is a very wiggly and happy puppy with so much extra skin and the cutest butt wrinkles you have ever seen. She was born from a pregnant neopolitan mother we rescued from the shelter and when we got the DNA back and found out the puppies were 100% mastiff that was pretty exciting! She is great with other dogs, she likes to play a lot and she has been around small dogs but she may play a little rough for tiny ones. She has been around cats but occasionally tries to chase. She is extremely affectionate and cuddly. She is crate trained and pretty well potty trained. To excellent home only, please tell me about yourself.

Learn More

Small right facing arrow
We'll also keep you updated on Gina's adoption status with email updates.
Photo of Gina

Gina

Neapolitan Mastiff Cane Corso

Female, 7 mos
Boulder, CO
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs,
Story
She is 80% neopolitan mastiff and 20% Cane Corso. She is 7 Months old and 90 pounds. She is a very wiggly and happy puppy with so much extra skin and the cutest butt wrinkles you have ever seen. She was born from a pregnant neopolitan mother we rescued from the shelter and when we got the DNA back and found out the puppies were 100% mastiff that was pretty exciting! She is great with other dogs, she likes to play a lot and she has been around small dogs but she may play a little rough for tiny ones. She has been around cats but occasionally tries to chase. She is extremely affectionate and cuddly. She is crate trained and pretty well potty trained. To excellent home only, please tell me about yourself.

Learn More

Small right facing arrow

Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Boulder, Colorado.

    an arrow icon
location arrow icon Current location
  • New York, NY
  • Los Angeles, CA
  • Houston, TX
  • Dallas, TX
  • El Paso, TX

Sorry, we can’t find that location! Please try again.

    Age
    an arrow icon

Mastiff puppies and dogs in nearby cities

Mastiff Puppies near me Mastiff in Arvada, CO Mastiff in Aurora, CO Mastiff in Berthoud, CO Mastiff in Brighton, CO Mastiff in Broomfield, CO Mastiff in Centennial, CO Mastiff in Cherry Hills Village, CO Mastiff in Commerce City, CO Mastiff in Denver, CO Mastiff in Edgewater, CO Mastiff in Englewood, CO Mastiff in Erie, CO Mastiff in Estes Park, 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 Johnstown, CO Mastiff in Lafayette, CO Mastiff in Lakewood, CO Mastiff in Littleton, CO Mastiff in Longmont, CO Mastiff in Louisville, CO Mastiff in Loveland, CO Mastiff in Milliken, CO Mastiff in Northglenn, 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 Boulder, Colorado

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

Mastiff shelters & rescues in Boulder, Colorado

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

Here are a few organizations closest to you:

Shelter

2.1 miles

Humane Society of Boulder Valley

2323 55th Street, Boulder, CO 80301

Pet Types: cats, dogs, small animals

More an arrow icon

Shelter

20.9 miles

Foothills Animal Shelter

580 McIntyre St., Golden, CO 80401

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

More an arrow icon

Rescue

23.1 miles

Ace of Hearts Dog Rescue - CO Transport Stop

711 Walnut St, Boulder, CO 80203

Pet Types: dogs

More an arrow icon

Rescue

29.4 miles

L.O.L.A.'S Rescue

6005 S. Taft Way, Littleton, CO 80127

Pet Types: dogs

More an arrow icon

Rescue

34.6 miles

Big Dogs Huge Paws, Inc

PO Box 460699, Aurora, CO 80046

Pet Types: dogs

More an arrow icon

Shelter

35.6 miles

Grand County Animal Shelter

3475 CR 57, Granby, CO 80446

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

More an arrow icon

Rescue

35.9 miles

Big Bones Canine Rescue

Windsor, CO 80550

Pet Types: dogs

More an arrow icon

Rescue

37 miles

All Aboard Animal Rescue

Fort Collins, CO 80526

Pet Types: cats, dogs

More an arrow icon

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!

magnifying glass with cat and dog

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

clipboard with list

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.

Learn More an arrow icon