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Mastiff puppies and dogs in Boston, Massachusetts

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

Adopt a Mastiff near you in Boston, Massachusetts

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!
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Or, how about these Mastiffs in cities near Boston, Massachusetts

These Mastiffs are available for adoption close to Boston, Massachusetts.
Photo of Mark

Mark

Mastiff Mixed Breed (Medium)

Male, 2 yrs 7 mos
Salem, NH
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Spayed or Neutered,
Story
Hello there, I'm Mark! I may be young, but I've got a heart full of love to give. Every morning, I wake up excited for the day ahead. I love playing with my favorite chew toy, but what I really crave is a good game of fetch with a human friend. I'm a quick learner, too! I've already mastered 'sit' and 'stay', and I'm eager to learn more. I promise to be your loyal companion, always ready for an adventure or a cozy nap on the couch. I'm not just looking for a home, I'm looking for a family. Adopt me and let's create a lifetime of wonderful memories together.

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Alamo

Mastiff Mixed Breed (Medium)

Male, 5 yrs 2 mos
Salem, NH
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
-

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Photo of Silvio

Silvio

Mastiff Great Pyrenees

Male, Young
Shrewsbury, MA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, House-trained, Shots are up-to-date,
Story
Silvio is the best boy. He is so loving, loves cuddles... and any kind of attention. He thinks hes small - still has puppy energy. He turned 3 in January 2026. I have no complaints with him whatsoever... rehoming him breaks our hearts, but he deserves better than the circumstances were facing. He needs room to stretch his legs and exercise on a regular basis. He loves playing in snow, he is so funny when he gets the zoomies lol. He is just the best!! He does so well at dogs parks, we take him almost every day. Gentle giant but protective over his family. He's not the biggest fan of strangers getting too close to us or our home but once they let him sniff & say hi its fine. I would love to be able to visit him occasionally. But he does need more than I can provide at this point so this must be done. You will love every second with him. He keeps life interesting thats for sure. He needs someone with time & energy.

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Photo of King Kong

King Kong

Mastiff

Male, 10 mos
Worcester, MA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Move over, Godzilla… there`s a new lovable giant in town! Meet King Kong, a goofy, dorky Mastiff mix puppy who is still trying to figure out what to do with all those legs, paws, and that BIG personality! He`s basically a walking, wiggling, wrestling machine with a heart of gold and absolutely no concept of personal space. We think King Kong would LOVE a canine buddy who enjoys playing, romping, and wrestling. He has enjoyed playing with other dogs at the shelter. Another fun-loving dog could be just his kind of partner in crime!Fair warning: this big boy is still working on his manners. He jumps up with enthusiasm and can knock people around without meaning to, so he`ll need an adopter who is physically able to safely handle and walk a strong, growing pup. If there are to be kids in the home should be teenagers.Looking for a whole lot of puppy silliness wrapped in one giant package? King Kong is ready to bring the laughs, the love, and possibly a few bruises to your lifeIf you are interested in adopting King Kong please come to the shelter on Mondays, Wednesdays and Thursdays during our walk-in adoption hours of 12-4pm

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Photo of Hansel & Gretal URGENT ‼️

Hansel & Gretal URGENT ‼️

Mastiff

Male, Adult
Seabrook, NH
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
🚨 URGENT: HANSEL & GRETAL NEED A WAY FORWARD—TOGETHER 🚨 Hansel and Gretal are a bonded Mastiff pair whose family is facing more than anyone should have to bear. Their dad passed away from cancer, and now their mom needs back surgery. She is having trouble walking and can no longer manage their care on her own. She is desperate for help finding a safe solution for them. This isn’t a family giving them up because they stopped loving them. It’s a heartbreaking situation that has left their mom needing support and Hansel and Gretal needing a new place to land. They’ve already lost their dad; they deserve the comfort of staying together as they face this next change. Please help Hansel and Gretal find a home—or the support they need—so they don’t have to be separated. They need someone willing to give this devoted pair a chance and help them through a difficult transition. Their family is asking for help, and time matters. ❤️🐾 PLEASE HELP TEXT KAREN 4136298152

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Photo of Augustus

Augustus

American Staffordshire Terrier Mastiff

Male, 1 yr
Cumberland, RI
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
Meet Augustus, an 11-month-old brindle American Staffordshire Terrier mix with a touch of Mastiff — and ready to roll into his forever home! At 60 pounds, Augustus is a strapping young guy with a friendly spirit and loyal heart that's just waiting to bond with his forever family. He's got so much life ahead of him, and is eager to be your devoted companion through all of it. Come meet Augustus, he promises you won't regret making him part of your pack! Augustus comes to us from a shelter in Georgia. He is fully vetted and is here at The Hotel. Breeds are best guess. If you would like to meet/adopt this pup, please complete an application on our website: www.HotelforHomelessDogs.com Adoption Fee: $675.00

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Mastiff puppies and dogs in nearby cities

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Related breeds in Boston, Massachusetts

Bullmastiffs in Boston, Massachusetts Neapolitan Mastiffs in Boston, Massachusetts Saint Bernards in Boston, Massachusetts

Mastiff shelters & rescues in Boston, Massachusetts

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

Here are a few organizations closest to you:

Rescue

31 miles

Lucky's Legacy Rescue - NH Transport Stop

Salem, NH 03079

Pet Types: cats, dogs, small animals

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Shelter

37 miles

Worcester Animal Rescue League

139 Holden St., Worcester, MA 01606

Pet Types: cats, dogs

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Rescue

39 miles

Arcadia Animal Rescue - NH Transport

Seabrook, NH 03874

Pet Types: cats, dogs, small animals

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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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