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!

India

Mastiff/Rottweiler

Female, Adult

Toronto, ON

Size

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

Details

Good with kids, House-trained,

Story

India Rottweiler/Boxer/Dogo Argentino mix (short coat) Large Adult Female This gorgeous brindle gal is India a 4 year old, 100 pound mixed breed dog who will be up to date on her veterinary care and spayed prior to adoption. Her current family is not able to provide her with the time or care she deserves. India is housetrained and crate trained, although, a crate has not been used in the past year or so. She is used to living in an apartment and is said to be quiet and comfortable being left alone while her family works full-time hours. She may whine initially when left in a new environment. She enjoys daily walks for exercise and to do her business. India is a Mastiff mix, and as such, will most likely become very attached to her family members but may initially be a bit wary of new people and animals. She warms up to women more quickly than men. India is currently living with 2 toddlers and is good with them. India has very limited experience with other dogs and has not lived with another dog. She has a Husky friend she likes to interact with on leash. She may react to other dogs when on leash walks who are as far away as on the other side of the street and needs a strong and confident owner to help her work through this behaviour using positive reinforcement based methods. She has also never lived with a cat. Her family is able to bathe and brush her and she has been professionally groomed. Her regular groomer says she is good for grooms. At the veterinarian, she is muzzled for invasive handling. Muzzles can be a great tool to help dog handlers feel safe. If you are looking for a loyal, large breed dog to snuggle with on the couch and believe you can provide India with the care she deserves, please fill out the Adoption Application on our website. Due to time constraints, we cannot respond to every email asking for more information on a dog. Please carefully review the bio for the dog and our adoption process https://www.speakingofdogs.com/adoption/adoption-process/. If you are still interested in adopting, please fill out the adoption application form at the bottom of that page. August 9, 2026, 8:51 am

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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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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

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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