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!

Floyd

Mastiff

Male, Adult

Pembroke, ON

Size

(when grown) -

Details

Story

Hi I'm Floyd! Look at me, I'm so handsome! My care team tells me I'm super smart and perceptive too. I am in search of a family to build a strong relationship with me and show me what forever love is. I am extremely food motivated and eager to learn once I'm comfortable. I require slow introductions to new environments, and people for best success because sometimes I get a little overwhelmed. If you would like to meet me, I'm staying at 115 Woodcrest Dr in Pembroke. Give us a call at 613-635-7508 or email at renfrewcounty@ontariospca.ca. My adoption fee is $585. It includes my neuter, vaccinations, dewormer,microchip and much more! Primary Color: Tan Weight: 27.2 Age: 3yrs 0mths 4wks

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Lewis

Mastiff

Male, Adult

Pembroke, ON

Size

(when grown) -

Details

Story

Hi I'm Lewis! I'm sweet boy who needs a family who understands that I'm not the most confident guy. I require slow introductions to new environments, and people for best success because sometimes I get a little overwhelmed and scared. I have huge potential and have shown my care team that once there is some trust built, many more doors open. I am extremely food motivated and eager to learn once I'm comfortable. If you would like to meet me, I'm staying at 115 Woodcrest Dr in Pembroke. Give us a call at 613-635-7508 or email at renfrewcounty@ontariospca.ca. My adoption fee is $585. It includes my neuter, vaccinations, dewormer,microchip and much more! Primary Color: Tan Weight: 33.007 Age: 2yrs 0mths 4wks

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Marylou

Mastiff

Female, Adult

Pembroke, ON

Size

(when grown) -

Details

Story

Hi I'm Marylou! I'm sweet girl who is on the lookout for a new family to build a strong relationship with me and show me what forever love is. I am extremely food motivated and eager to learn once I'm comfortable. I require slow introductions to new environments, and people for best success because sometimes I get a little overwhelmed. If you would like to meet me, I'm staying at 115 Woodcrest Dr in Pembroke. Give us a call at 613-635-7508 or email at renfrewcounty@ontariospca.ca. My adoption fee is $585. It includes my spay, vaccinations, dewormer,microchip and much more! Primary Color: Tan Weight: 35.002 Age: 3yrs 1mths 0wks

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Mastiff

Male, 6 yrs

Toronto, ON

Size

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

Details

House-trained,

Story

Meet HK, an all-star walking companion who is frequently called the best guy by the volunteers and staff who adore him! If you are looking for a clever, treat-motivated dog who loves to learn, HK is ready to impress you. HK is a sweet and enthusiastic gentleman who is an absolute joy to take on outdoor adventures. HK loves spending time with his people — he’ll happily lean in for cuddles and soak up all the affection you’re willing to give. His favorite things include treats, exploring new places, and being your loyal sidekick wherever the day takes you. Recently during training games, he has been displaying excellent handler focus. Responsive to verbal encouragement, he has learned to happily check in and disengage from distractions for a tasty treat. After a fun, engaging walk, he loves winding down with a great petting session and lots of affection. HK may be happiest as the only dog in the home, where he can soak up all the attention and continue building his confidence out in the world. If you are looking for a smart, loving partner for your daily walks, couch cuddles and training adventures, come meet HK today!

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Preacher

Mastiff

Male, Young

King City, ON

Size

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

Details

Story

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Hallie

Mastiff

Female, 2 yrs 1 mo

Kingston, ON

Size

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

Details

Story

Meet Hallie!Joined us in: June 2026About Hallie:· Weighs 33kg.· A sweet, affectionate girl who enjoys attention and spending time with her people.· Can be nervous when meeting new people but warms up with patience and kindness.· Loves to run and play and would thrive with opportunities to burn off her energy.· Would benefit from basic obedience training and confidence-building exercises.· Highly food motivated, making training a fun and rewarding experience.Her perfect match:· An experienced owner who understands the needs of a strong, energetic dog.· A home with a fenced-in yard or secure outdoor space where she can safely run and play.· Someone committed to continuing her training, including leash manners and basic obedience.· A family with dog-savvy children aged 10 years or older who can interact respectfully with her.· May potentially do well with another dog of a similar size and energy level that can appropriately take correction.Some extra facts about Hallie:· Highly food motivated and should be fed separately from other animals, as she may guard her food.· Can be strong on leash and would benefit from continued leash training.· Enjoys being active and will thrive with regular exercise and enrichment.· Takes a little time to feel comfortable in new situations but forms bonds once she trusts you.· A silly and loyal companion with really great zoomies.In short:Hallie is a sweet, active girl looking for an experienced home that can provide guidance, structure, and continued training. With patience, confidence-building, and plenty of opportunities to exercise and have fun, she has all the makings of a loyal and affectionate companion.

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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