Mastiff Adoption in Maricopa, AZ: Mastiff Puppies for Sale in Maricopa, AZ

Adopt a Mastiff near you in Maricopa, Arizona

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 Maricopa, Arizona

These Mastiffs are available for adoption close to Maricopa, Arizona.

MAGNUM

Mastiff

Male, Adult

Chandler, AZ

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Not good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Please note this dog is NOT an official Underdog dog, and you will be connected with the person who has the dog. Please Contact (Current Owner of Dog): Brittany Schultz; 510-458-4151; animal.shelter@sierravistaaz.gov MEET MAGNUM!! Magnum is a friendly, goofy, and even-tempered male dog who has been patiently waiting at the Sierra Vista Animal Shelter for over 340 days and is more than ready for a fresh start. He walks well on leash, enjoys car rides, and loves toys, bringing a playful spark and charm wherever he goes. Magnum does best with adults and would thrive in a calm, experienced home where he can soak up attention and structure. While he can tolerate other dogs, he would be happiest as the only pet, but any potential canine siblings should be introduced through a proper meet and greet. His history shows he does best in a stable environment, and with the right person, Magnum will be a loyal, fun-loving companion who’s eager to finally have a place to call home. If you are interested in meeting this dog, please visit our website for our online application www.underdogaz.com PLEASE NOTE: This dog is courtesy posted for another individual or Rescue. Different policies and fees may apply. March 7, 2026, 4:34 pm

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ROLLIE #2

Mastiff Pit Bull Terrier

Male, Adult

Chandler, AZ

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

Please note this dog is NOT an official Underdog dog, and you will be connected with the person who has the dog. Please Contact Wendy, 602-818-5541, Imazmattie@gmail.com: MEET ROLLIE #2!! Rollie loves people, kids, and female dogs. He is in a home with five dogs, and the boys are starting to not get along. He is leash trained and is not reactive on walks. He will resource guard his bowl with a warning, and he is learning "Leave It." He is super calm and loving with everyone. Meet Rollie today! If you are interested in meeting this dog, please visit our website for our online application www.underdogaz.com PLEASE NOTE: This dog is courtesy posted for another individual or Rescue. Different policies and fees may apply. March 7, 2026, 4:34 pm

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Special Needs

DAISY #27

Mastiff

Female, Adult

Chandler, AZ

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Good with kids, Not good with dogs, Not good with cats, Needs special attention, House-trained, Spayed or Neutered, Shots are up-to-date,

Story

Please note this dog is NOT an official Underdog dog, and you will be connected with the person who has the dog. Please Contact (Current Owner of Dog): Charlene Garst; 480-2924576; grammag05@gmail.com MEET DAISY #27!! Daisy is a sweet, affectionate, and intelligent pup who forms deep bonds with her people and thrives in a calm, structured home where she can be the only pet. She is leash and crate trained, obedient, eager to please, and loves toys, fetch, and interactive play, but her favorite thing is simply being close to her humans. Daisy does wonderfully with respectful children and all adults, especially when interactions are gentle and consistent. She enjoys a predictable daily routine, relaxing walks without distractions, and car rides, and she settles nicely when given time to adjust to her environment. While she can become anxious around other dogs or during transitions like departures, she responds well to reassurance, soothing touch, and clear guidance, and she has training tools in place to help her succeed. Daisy would flourish in a patient, loving home that can provide structure, stability, and plenty of affection, where she can truly shine as a devoted and loyal companion. Complete an application and meet Daisy. If you are interested in meeting this dog, please visit our website for our online application www.underdogaz.com PLEASE NOTE: This dog is courtesy posted for another individual or Rescue. Different policies and fees may apply. August 27, 2026, 1:51 pm

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Janice

English Mastiff

Female, Young

Mesa, AZ

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,

Story

Janice is a female Mastiff mix pup who recently joined the Big Hearts for Big Breeds crew. She's got the kind of sweet face that instantly melts hearts! Janice is another sibling from the beloved “Friends” foster pups, and she’s already showing what a special girl she is. Playful and curious, Janice is settling right into her new foster home and learning the ropes alongside other large dogs. She enjoys playtime, companionship, and is gaining confidence every day as she adapts to her new surroundings. With her loving nature and easygoing personality, Janice is ready to grow into a wonderful companion for a family who will continue guiding her, loving her, and cheering her on as she blossoms.

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Maple

English Mastiff

Female, Young

Mesa, AZ

Size

(when grown) Med. 26-60 lbs (12-27 kg)

Details

Good with dogs, Good with cats, House-trained, Spayed or Neutered,

Story

Maple is a one-year-old Mastiff mix who may be petite in size, but she’s overflowing with personality, playfulness, and charm. Now in the care of Big Hearts for Big Breeds, this sweet young girl is ready to find a forever family to grow up with. Maple is the sibling of some familiar Big Hearts faces—the beloved “Friends” crew, Rachel, Monica, Phoebe, and Janice—but she’s just beginning her own rescue journey. Like her siblings, she is shy and timid at first, but she truly has a loving heart and is eager to make lasting connections with the people around her. Still very much a puppy, Maple loves to play and brings a fun, energetic spirit wherever she goes. She does well with other dogs and was around cats when she was younger, giving her a solid foundation as she continues to learn and mature. With continued guidance, socialization, and plenty of positive experiences, she’s sure to blossom into an incredible companion. Maple is looking for a family that will embrace her youthful enthusiasm, celebrate her milestones, and give her all the love she deserves. If you’re searching for a playful, affectionate best friend with a bright future ahead, Maple might just be the perfect addition to your home.

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Dr Dre

English Mastiff Great Dane

Male, Adult

Mesa, AZ

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Good with kids, Good with dogs, Needs experienced adopter, House-trained, Spayed or Neutered,

Story

Dr Dre is a five-year-old Great Dane/Mastiff mix with a big heart, a big personality, and a whole lot of love to give. Just over a year ago, Dre found a family of his own, but sometimes life changes and circumstances shift. Through no fault of his own, Dre has found himself back with Big Hearts for Big Breeds, and we’re committed to helping him find the right forever home this time around. So, what do we know about Dre? He’s great with other dogs, wonderful with kids, and absolutely loves his people. Dre is the kind of dog who loves hard, plays hard, and will keep you laughing with his goofy personality. And when the fun is over, he’s happiest curled up beside the people he loves. Dre isn’t a “problem dog.” He’s a dog who thrives with leadership. He wants someone he can trust—someone who can provide consistency, confidence, clear expectations, and kind guidance. When Dre has that structure, he shines. He doesn't want to be in charge; he wants to know that someone he trusts has things handled. The good news? Dre comes with an incredible foundation of training. His trainer has invested in helping him become the best version of himself and is committed to supporting his future foster or adopter with follow-up training sessions. His next family won't be navigating this journey alone. Dre is looking for someone who understands the responsibility and rewards of living with a giant-breed dog and is ready to continue the structure that helps him succeed. Give him the leadership he needs, the consistency he craves, and the love he so freely gives, and you'll have one incredibly devoted companion by your side. Sometimes the second chance is the one that finally sticks. Dre is ready for his.

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Mastiff puppies and dogs in Maricopa, Arizona

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Mastiff puppies and dogs in Maricopa, Arizona

Learn More:

Adopt a Mastiff near you in Maricopa, Arizona

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 Maricopa, Arizona

These Mastiffs are available for adoption close to Maricopa, Arizona.

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Maricopa, Arizona

Mastiff shelters & rescues in Maricopa, Arizona

Looking for a specific shelter or rescue?

Want to learn more about adopting a Mastiff puppy or dog?

Mastiff basics

Mastiff basics