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Mastiff puppies and dogs in Hamilton, Ontario

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

Adopt a Mastiff near you in Hamilton, Ontario

These Mastiffs are available in Hamilton, Ontario.
We'll also keep you updated on Stella's adoption status with email updates.
Photo of Stella

Stella

Mastiff

Female, 2 yrs
Hamilton, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
At 2 years old, Stella is a beautiful Mastiff cross with a soft heart wrapped in a big, strong body. She arrived at the shelter as a stray alongside her presumed male littermate, and while the world can feel a little overwhelming at first, this sweet girl is showing us more of her gentle personality every day. Stella was understandably nervous during her medical intake, but she bravely allowed handling — and even showed off that she knows sit, down, and shake a paw! She takes treats ever so gently and is happily food-motivated, which makes her a wonderful candidate for continued training. With guidance and positive reinforcement, she’ll blossom into the very best version of herself. Though she can be timid when first meeting new people, Stella simply asks for a considerate, calm approach and a little patience. Once she feels safe, she absolutely melts — leaning her big frame into her person for cuddles, comfort, and reassurance. She bonds deeply and looks to her handler for guidance, making her a loyal and devoted companion. Stella appears to be housetrained and keeps her kennel tidy. She has been quiet during her stay and is described by staff as “shy but sweet” — a gentle giant finding her footing. While she can be selective with other dogs, she does warm up nicely and can enjoy playful interactions with well-matched canine friends. Because of her size and initial timidness — and her unknown history — a home without small children is recommended at this time. She will thrive with an experienced, patient handler who understands that trust is earned through kindness and consistency. As a large-breed girl, Stella will need daily exercise and plenty of mental stimulation to stay happy and healthy. Walks, enrichment toys, training sessions, and time spent bonding with her people will help her confidence grow beautifully. If you’re someone who appreciates the quiet, sensitive souls — the dogs who form deep, meaningful bonds — Stella may be your perfect match. Give her time, give her space, and she will give you her whole heart. Please complete an adoption application: https://www.hamilton.ca/home-neighbourhood/animals-pets/adopt-or-foster-pet/adoptions Animal adoptions and viewing are by appointment only. This allows our Adoption Staff to spend quality time with each potential home to ensure the most successful matches are made between the animals and their new families. *Please note: we only adopt within Ontario

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We'll also keep you updated on Oscar's adoption status with email updates.
Photo of Oscar

Oscar

Mastiff

Male, 3 yrs
Hamilton, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Oscar is a handsome three-year-old Mastiff cross with a big body and an even bigger heart. This lovable giant has quickly become a staff favorite thanks to his sweet nature, eagerness to please, and calm presence in his kennel. Despite his size, Oscar is a gentle soul who enjoys spending time with people and thrives on connection and positive interaction. Oscar is a medium-energy dog with short bursts of playful enthusiasm —especially when toys are involved! He absolutely loves playtime and is easy to redirect, making him a great candidate for continued training. He’s a smart boy who responds well to guidance and is already showing that he has the potential to become a well-mannered, balanced companion with the right structure in place. Due to his size, strength, and current lack of manners, Oscar is looking for a home with large-breed experience and a confident, physically capable handler. He doesn’t quite realize how big he is, so ongoing positive reinforcement training will be key to helping him learn boundaries and polite behaviors. Enrolling him in training classes is strongly recommended and will set him up for success. Oscar does show some reactivity toward other dogs, particularly males that react to him. However, his behavior is manageable with the right approach. He would benefit from a home committed to maintaining safe distances, using high-value rewards to build positive associations, and consistently working on obedience while keeping him under threshold. With patience, structure, and continued guidance, Oscar has great potential to make progress in this area. Because of his size and strength, a home without young children is recommended. Oscar will also need daily physical exercise and mental enrichment to keep him happy and fulfilled. The good news is that he settles well in his kennel and may do very well with crate training in his future home. Oscar is a sweet, intelligent dog who is ready to thrive with the right match. With consistency, training, and lots of love, he has all the makings of a loyal, well-balanced companion. Please complete an adoption application: https://www.hamilton.ca/home-neighbourhood/animals-pets/adopt-or-foster-pet/adoptions Animal adoptions and viewing are by appointment only. This allows our Adoption Staff to spend quality time with each potential home to ensure the most successful matches are made between the animals and their new families. *Please note: we only adopt within Ontario

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Or, how about these Mastiffs in cities near Hamilton, Ontario

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

Stella

Mastiff

Female, 2 yrs
Hamilton, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
At 2 years old, Stella is a beautiful Mastiff cross with a soft heart wrapped in a big, strong body. She arrived at the shelter as a stray alongside her presumed male littermate, and while the world can feel a little overwhelming at first, this sweet girl is showing us more of her gentle personality every day. Stella was understandably nervous during her medical intake, but she bravely allowed handling — and even showed off that she knows sit, down, and shake a paw! She takes treats ever so gently and is happily food-motivated, which makes her a wonderful candidate for continued training. With guidance and positive reinforcement, she’ll blossom into the very best version of herself. Though she can be timid when first meeting new people, Stella simply asks for a considerate, calm approach and a little patience. Once she feels safe, she absolutely melts — leaning her big frame into her person for cuddles, comfort, and reassurance. She bonds deeply and looks to her handler for guidance, making her a loyal and devoted companion. Stella appears to be housetrained and keeps her kennel tidy. She has been quiet during her stay and is described by staff as “shy but sweet” — a gentle giant finding her footing. While she can be selective with other dogs, she does warm up nicely and can enjoy playful interactions with well-matched canine friends. Because of her size and initial timidness — and her unknown history — a home without small children is recommended at this time. She will thrive with an experienced, patient handler who understands that trust is earned through kindness and consistency. As a large-breed girl, Stella will need daily exercise and plenty of mental stimulation to stay happy and healthy. Walks, enrichment toys, training sessions, and time spent bonding with her people will help her confidence grow beautifully. If you’re someone who appreciates the quiet, sensitive souls — the dogs who form deep, meaningful bonds — Stella may be your perfect match. Give her time, give her space, and she will give you her whole heart. Please complete an adoption application: https://www.hamilton.ca/home-neighbourhood/animals-pets/adopt-or-foster-pet/adoptions Animal adoptions and viewing are by appointment only. This allows our Adoption Staff to spend quality time with each potential home to ensure the most successful matches are made between the animals and their new families. *Please note: we only adopt within Ontario

Learn More

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We'll also keep you updated on Oscar's adoption status with email updates.
Photo of Oscar

Oscar

Mastiff

Male, 3 yrs
Hamilton, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Oscar is a handsome three-year-old Mastiff cross with a big body and an even bigger heart. This lovable giant has quickly become a staff favorite thanks to his sweet nature, eagerness to please, and calm presence in his kennel. Despite his size, Oscar is a gentle soul who enjoys spending time with people and thrives on connection and positive interaction. Oscar is a medium-energy dog with short bursts of playful enthusiasm —especially when toys are involved! He absolutely loves playtime and is easy to redirect, making him a great candidate for continued training. He’s a smart boy who responds well to guidance and is already showing that he has the potential to become a well-mannered, balanced companion with the right structure in place. Due to his size, strength, and current lack of manners, Oscar is looking for a home with large-breed experience and a confident, physically capable handler. He doesn’t quite realize how big he is, so ongoing positive reinforcement training will be key to helping him learn boundaries and polite behaviors. Enrolling him in training classes is strongly recommended and will set him up for success. Oscar does show some reactivity toward other dogs, particularly males that react to him. However, his behavior is manageable with the right approach. He would benefit from a home committed to maintaining safe distances, using high-value rewards to build positive associations, and consistently working on obedience while keeping him under threshold. With patience, structure, and continued guidance, Oscar has great potential to make progress in this area. Because of his size and strength, a home without young children is recommended. Oscar will also need daily physical exercise and mental enrichment to keep him happy and fulfilled. The good news is that he settles well in his kennel and may do very well with crate training in his future home. Oscar is a sweet, intelligent dog who is ready to thrive with the right match. With consistency, training, and lots of love, he has all the makings of a loyal, well-balanced companion. Please complete an adoption application: https://www.hamilton.ca/home-neighbourhood/animals-pets/adopt-or-foster-pet/adoptions Animal adoptions and viewing are by appointment only. This allows our Adoption Staff to spend quality time with each potential home to ensure the most successful matches are made between the animals and their new families. *Please note: we only adopt within Ontario

Learn More

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We'll also keep you updated on London's adoption status with email updates.
Photo of London

London

Mastiff Boxer

Female, 3 yrs 1 mo
Guelph, ON
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Hello! My name is London!I`m a fun and loving girl! I am snuggly and affectionate. I love treats and toys, which makes training a blast! I sometimes get excited and like to grab sleeves with my mouth. I thought that was fun but apparently humans don`t enjoy it as much as I do. No worries though, I`m super smart and doing well with training - I`m learning about other fun things to do instead. If you love cuddling, playing and snoring, I am definitely the girl for you!MY IDEAL HOME INVOLVES…CHILDREN: Teenagers may be ok. No young kids given my mouthing can sometimes be hard.OTHER DOGS: I don`t seem to enjoy the company of other dogs and I`m looking to be the only dog.CATS: Potentially, with cat experienced and confident around dogs.FIRST-TIME DOG OWNERS: I would do best with someone who has dog experience.FENCED-IN YARD: Required.HOUSING ENVIRONMENT: Any with yard.SOMEONE HOME MOST OF THE DAY: Not necessarily.SOME OTHER THINGS TO KNOW ABOUT ME…ACTIVITY LEVEL: Medium.HOUSE-TRAINED: Yes.If you think I could be a good match for your home, click the “Adopt Me” button to apply!

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We'll also keep you updated on Honey's adoption status with email updates.
Photo of Honey

Honey

Mastiff Mixed Breed (Large)

Female, 9 yrs 8 mos
Toronto, ON
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
Meet Honey. This gentle senior girl was found wandering the streets, alone and in pain. Her joints ached, her hips were stiff, and her body told the story of being left outside for far too long. But her story is changing — thanks to the love and expertise of her foster mom, a vet tech who’s made it her mission to help Honey heal. And she is healing. Honey is now on a regimen that helps her thrive: daily Metacam, Cartrophen injections, and joint supplements. Like many seniors, she’ll need to stay on this care plan — but it’s a small price to pay for the comfort and love she so deeply deserves. What’s sweeter than Honey? Absolutely nothing. We all hope to grow old with dignity and peace. But imagine finally reaching your golden years, only to be discarded like you no longer mattered. That’s what happened to Honey. Did she do anything wrong? Never. She was simply born kind, gentle, and full of love — and that’s still exactly who she is. She sleeps next to her foster sister’s crib at night, quietly keeping watch. She wears silly hats and dish towel “blankets” because it makes the baby laugh. She’s even stolen the heart of her foster brother, who now lays beside her in quiet companionship. She brings peace and warmth to every room she enters. She’s perfect. Now it’s time for her forever. Honey deserves a family who will cherish her through her senior years. Someone who sees the beauty in her graying muzzle, who understands her past, and who is ready to give her the soft landing she never had. If your home — and your heart — has room for a little sweetness, Honey is ready. Apply today and let her golden years shine.

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We'll also keep you updated on Priscilla's adoption status with email updates.
Photo of Priscilla

Priscilla

Mastiff

Female, 6 yrs 2 mos
Toronto, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Meet Priscilla, queen of the dog park! Priscilla is such a cutie and just the sweetest girl. She has a curious spirit, a love for treats and has already shown herself to be an affectionate and eager-to-please dog! She always gets excited to see our volunteers and will greet them with her whole body wagging, eager for some attention and maybe a tasty snack or two. On walks, Priscilla is excited to explore and does well when walked at her pace. While she’s confident enough to explore quieter areas, she can get a little spooked by busy or high-traffic zones, but she settles down quickly once she’s in a calmer environment. She’s a quick learner, and she comes right to you when called, especially if there’s a treat involved. Priscilla really enjoys spending time outside, whether walking, playing or simply people-watching. She just enjoys being in the moment! When it’s time to head back, she’s easy to return back home and will happily go back inside for a good petting session. Priscilla is a friendly and sweet-natured dog who thrives on companionship. She will need a patient family that can continue to build her confidence and help her adjust to her new routine at her own pace. She will soon blossom into the loving, loyal companion she’s meant to be. Come say hi to Priscilla today!

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We'll also keep you updated on HK's adoption status with email updates.
Photo of HK

HK

Mastiff

Male, 5 yrs 10 mos
Toronto, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
HK is a big, goofy 100-pound sweetheart who truly believes he’s a lap dog! This gentle giant has a heart as big as his paws and is always ready to make you smile with his silly antics and affectionate personality. HK loves spending time with his people — he’ll lean right in for cuddles and happily soak up all the love you have to offer. HK’s favorite things? Treats, exploring new places, and being your #1 sidekick. He enjoys going for walks and exploring the world, though due to his size and strength, he’ll need someone comfortable handling a large dog. HK is currently working on his leash manners and learning to stay calm when he spots other dogs. With ongoing positive reinforcement training, he’s making great progress and showing that he’s eager to learn! If you’re looking for a loyal, loving best friend who’ll fill your life with laughter (and maybe take up a bit of space on the couch), HK is your guy!

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Mastiff shelters & rescues in Hamilton, Ontario

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

Here are a few organizations closest to you:

Shelter

2.1 miles

City of Hamilton Animal Services

247 Dartnall Road, Hamilton, ON L8W 3V9

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

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Shelter

25.8 miles

Guelph Humane Society

190 Hanlon Creek Blvd, Guelph, ON N1C 0A1

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

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Rescue

39.3 miles

Team Dog Rescue

200 Bay St., Royal Bank Plaza, PO Box 64043, Toronto, ON M5J 2T6

Pet Types: dogs

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Shelter

40.6 miles

Toronto Humane Society

11 River Street, Toronto, ON M5A 4C2

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

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Rescue

42.9 miles

Oxford County Animal Rescue

789 Dundas Street, Woodstock, ON N4S 1E1

Pet Types: cats, dogs, rabbits

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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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