Mastiff Adoption in Ontario: Mastiff Puppies for Sale in Ontario

Adopt a Mastiff near you in Ontario

Below are our newest added Mastiffs available for adoption in Ontario. To see more adoptable Mastiffs in Ontario, use the search tool below to enter specific criteria!

Harley

Mastiff

Male, Senior

Cornwall, ON

Size

(when grown) -

Details

Story

Hello, I'm Harley! I love spending my days exploring new scents and cozying up with friends who give the best cuddles. I'm quite the smarty, always eager to learn new tricks or solve puzzles. My mellow nature makes me a perfect companion for quiet evenings. Loyalty? I've got it in spades! I'm looking for someone who cherishes loyalty and seeks a gentle friend to share life's simple joys. If you're looking for a loyal and loving friend, I'm ready to fill your days with warmth and curiosity. Primary Color: Brown Weight: 50.1 Age: 10yrs 0mths 1wks

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Priscilla

Mastiff

Female, 6 yrs

Toronto, ON

Size

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

Details

House-trained,

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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Mastiff

Male, 5 yrs 8 mos

Toronto, ON

Size

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

Details

House-trained,

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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Maverick

Mastiff

Male, 3 yrs

Bancroft, ON

Size

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

Details

Good with kids, Good with dogs, House-trained,

Story

Hi everyone meet Maverick, he is the sweetest boy around he loves to play with the other dogs around and does not seem to tire . He is healthy and happy boy came to us as an owner surrendered.He does really well in his foster home he is a strong boy. But sweet and loving not sure about cat and because of his size no small children. House broken and fully Crete trained. Ask us for adoption application.

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Paris

Mastiff

Female, 3 yrs

Hamilton, ON

Size

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

Details

Needs experienced adopter, House-trained,

Story

Paris may share a name with a fashion capital, but she’s proudly rocking a more “wrinkly jowls” than “runway couture” look - and honestly, it just adds to her charm. This 3-year-old Mastiff cross came to the shelter as an unclaimed stray with another dog, and since then she’s been winning hearts left, right, and at every red light. Paris is basically a giant puppy in a grown-dog body. When she’s out of her kennel, she’s all joy, bounce, and enthusiasm, complete with happy jumps and a “LET’S DO THINGS!” attitude. She’s strong (very strong), so she’ll need a confident, sturdy human who can handle her power while she learns the ropes. Obedience classes will be right up her alley - Paris is eager, food-motivated, and would love the chance to learn some manners and show off her brains. An EasyWalk harness would be a great tool to help manage her leash-pulling enthusiasm while she’s learning. Adventure is Paris’s love language. She lives for walks and would be thrilled to join an active family who enjoys exploring the world with her. When it’s time to relax indoors, food puzzles are a fantastic way to keep her big brain busy and her jowls happily occupied. And then there’s her snuggle game, which is truly elite. One volunteer reports that Paris knew she was getting a much shorter walk than usual but she was totally fine with it, as long as she could stretch up for a good snuggle. She happily stayed there, soaking up affection like it was her full-time job. In fact, Paris has accidentally become a master of marketing. While wearing her “Adopt Me” leash near a busy intersection, she calmly sat through 30 - 40 drive-bys, charming passersby as traffic slowed at red lights. It turns out the perfect recipe for subversive marketing is a dog who’s patient, affectionate, and unbothered by the world going by - and Paris nailed it (wrinkles, drool, and all). Sweet, strong, snuggly, and hilariously mastiff-y, Paris would make a wonderful companion for someone with the time, patience, and love to help her shine. If you’re looking for a dog who’s more heart than high fashion—and who gives exceptional hugs—Paris just might be your girl. 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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Thor

Mastiff/American Bulldog

Male, Young

Keswick, ON

Size

(when grown) -

Details

Story

Hello there! My name is Thor, Male - neuteredMastiff x American Bulldog MixApprox. 1 year, 8 months oldI'm a big lovable marshmallow in a BIG package. You'll find that my heart is just as large as my frame, and I'm ready to share all the love I have with my forever family.When it comes to people, I'm friendly but can be a little nervous, especially around sudden movements. I thrive best with slow and gentle introductions. Once I feel comfortable, I'm your classic wiggle bug, eager to make friends and soak up all the affection you have to offer.I haven't quite figured out which toys I like best yet, but I'm excited to explore and find my favourites with you! What really gets my tail wagging is praise, treats, and people. I'm highly motivated by love and snacks, which will make training and bonding with me a delightful experience.I'm still working on my basic training, which means we can learn together. With your guidance and a few tasty treats, I'm sure to pick up on commands and become the well-mannered companion you're looking for.So, if you're looking for a gentle giant who will fill your home with love and laughter, I'm your guy. Primary Color: Black Brindle Secondary Color: Black Brindle Weight: 40.009 Age: 1yrs 8mths 4wks

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Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Ontario.

Mastiff puppies and dogs in Ontario

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Adopt a Mastiff near you in Ontario

Below are our newest added Mastiffs available for adoption in Ontario. To see more adoptable Mastiffs in Ontario, use the search tool below to enter specific criteria!

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Mastiff puppies and dogs in Ontario cities

Mastiff shelters & rescues in Ontario

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Mastiff puppies and dogs in Ontario

Jump to:

Adopt a Mastiff near you in Ontario

Below are our newest added Mastiffs available for adoption in Ontario. To see more adoptable Mastiffs in Ontario, use the search tool below to enter specific criteria!

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in Ontario cities

Mastiff shelters & rescues in Ontario

Looking for a specific shelter or rescue?

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

Mastiff information

Mastiff basics