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!

Rivendell

Mastiff/St. Bernard

Female, Puppy

Port McNicoll, ON

Size

(when grown) -

Details

Story

Riuendell is a gentle and loving puppy with a peaceful presence. She has a thoughtful, observant personality and enjoys taking in the world around her. Like her sisters, she will grow into a large breed dog who thrives with consistent training, positive reinforcement, and close companionship. Riuendell is looking for a forever home ready for big paws, a big heart, and a lifetime of loyalty. Primary Color: Black Secondary Color: White Weight: 4.6 Age: 0yrs 0mths 8wks

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Minas Tirith

Mastiff/St. Bernard

Female, Puppy

Port McNicoll, ON

Size

(when grown) -

Details

Story

Minas Tirith is as strong and stunning as her name suggests! She's confident, playful, and enjoys being right in the middle of the action. This sweet girl has a balanced personality - adventurous when it's time to play and calm when it's time to relax. With proper guidance and early socialization, she will mature into a steady, dependable companion. Minas Tirith is ready to grow alongside a family committed to helping her become the best version of herself. Primary Color: Black Secondary Color: Brown Weight: 4.5 Age: 0yrs 0mths 8wks

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Moria

Mastiff/St. Bernard

Female, Puppy

Port McNicoll, ON

Size

(when grown) -

Details

Story

Moria is a sweet and soulful puppy who melts hearts wherever she goes. She has a gentle nature and a curious spirit, always ready to explore before returning for reassurance and snuggles. As a Mastiff/Saint Bernard mix, she's expected to grow into a large, loyal companion who thrives on close family bonds. Moria would do wonderfully in a home ready to provide patient training, structure, and plenty of love. Primary Color: Grey Secondary Color: White Weight: 5.1 Age: 0yrs 0mths 8wks

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Rohan

Mastiff/St. Bernard

Female, Puppy

Port McNicoll, ON

Size

(when grown) -

Details

Story

Rohan is a big-hearted girl with an even bigger future ahead of her! This Mastiff/Saint Bernard mix puppy is already showing signs of the gentle, loyal temperament her breeds are known for. She's affectionate and loves being close to her people. Rohan enjoys playtime with her sisters but is just as happy soaking up attention and cuddles. With consistent training and socialization, she will grow into a devoted, protective, and loving family companion. Primary Color: Tri Color Weight: 4.1 Age: 0yrs 0mths 8wks

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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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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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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