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Mastiff puppies and dogs in Ontario

Looking for a Mastiff puppy or dog in Ontario? Adopt a Pet can help you find an adorable Mastiff near you.

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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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Photo of Epik

Epik

Mastiff

Female, Adult
Kingston, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Name, age, breed: Epik, 4 years, Mastiff mixLikes: Pets, cuddling, going on walksDislikes: Loud environments, being crowdedWhat would be the ideal home? A calm and quiet home with an experienced owner who will be patient with Epik while gaining her trust!Good with other cats? UnknownGood with dogs? May be ok with another calm dog around the same size who will respect her spaceGood with children? Recommend no children under 14 years due to nervousnessTemperament: Calm, gentle, nervous when meeting new people but is very affectionate after gaining her trustMotivators? TreatsAny commands? Sit, downHouse trained? UnknownCrate trained? UnknownHow long will it take to settle into a new environment? About a monthAny special needs or traits an adopter should know? She is good on leash but very strong!If you think Epik is the one for you - fill out an application today!
Photo of Ruby

Ruby

Mastiff

Female, 2 yrs
London, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Good with cats, House-trained,
Story
Introducing Ruby – she’s cheeky, goofy and so affectionate! What will it be about Ruby that will capture your heart? Will it be her adoring gaze, fun-loving and silly antics or those unbelievable pearly whites that could only rival that of a A-list actress. ​ Have you been looking for a sidekick in your life that will greet you with open arms and quite literally reach out for hugs because they are so happy to see you? The amount of love this girl has to give is almost too good to be true. She loves her people and has a fondness for kids too! Her favourite pastime is curling up in your lap for a nap. ​ Ruby has been exposed to cats. She may challenge the cat a bit and may chase, but it feels like the motivation to do so is based on friendship and a want for a companion. Ruby does not like to be alone but with time, patience and another canine in the home this will surely improve. Easily meets people and dogs on neighborhood walks which makes us believe a home with a confident and friendly dog would suit her best. If there is a young person in the home that would be a bonus! ​ Take a seat because her background will make you shake your head with disbelief. She was found abandoned on a reserve, emaciated and pregnant. Sadly, she lost her entire litter as she was too weak to support the puppies. She was literally starving and it seems like a consequence of this makes her starved for attention. So, she bonds hard and fast and is working on this in her foster home. She is quite literally re-building herself both physically and mentally. ​ A work-from-home scenario or one where family members are home for the majority of the day is ideal. She can get vocal when you leave the house but with distraction this is improving. ​ Next up, car rides. She’s the kinda gal who rides nose up with ears blowing in the wind. You can just tell that it brings her joy. She is interested in squirrels and geese but her prey drive doesn’t seem to be high. It is almost an inquisitive thing. ​ Not crated in the house, sleeps on her dog bed in the bedroom and looks to her stuffie collection for comfort. She LOVES stuffies! ​ She is a mastiff mix and it clearly shines through. She is affectionate, has a gentle demeanour and takes calm direction well. Easily trainable and leash skills are improving every day. ​ Ruby’s adoption fee is $700. She is up to date on vaccines, heartworm negative and has been both spayed and microchipped. If you are interested in adopting Ruby please fill out an adoption application
Photo of Simba

Simba

Mastiff

Male, Adult
Richmond Hill, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Needs experienced adopter, House-trained,
Story
We acquired Simba from a breeder about 4 years ago. He is the sweetest boy and very obedient. We are looking for a loving home where he will be showered with affection and a lot of space indoors and out for him to roam or laze about (which is more his style). Simba does have what seems to be some gut issues and has had ear infections that we have treated in the past. His vet hasn’t been very helpful so I’m not sure but I just wanted whoever the lucky family is that takes this gentle giant to know the full picture. I wish we didn’t have to rehome him but my son had his adenoids removed due to the allergies and is still constantly sneazing and breaks out in hives whenever he touches anything Simba has touched. Simba is absolutely an angel. He’s super gentle and has never ever shown us any aggression. His bark is very handy in scaring away possible intruders and pesky sales people lol I want the best possible home for him, he deserves it.
Photo of Gregory

Gregory

Mastiff

Male, Adult
Kingston, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Name: GregoryAge: 3 years old Breed: MastiffLikes: Cuddling, playing with his toys Dislikes: Being alone!What would the ideal home: An energetic home to help get out his energy, someone willing to work on obedience and also loves to cuddle. He's a playful and cuddly guy.Good with cats: YesGood with dogs: YesGood with children: Very excitable and wants to play, caution around small children as he's so large and will knock them over Temperament: Friendly, PlayfulMotivators: Food/treatsKnown commands: "Sit" , "Wait" for food, "Drop it" for toys, and working on "Down"House trained: YesCrate trained: No How long will it take to settle into a new environment: a couple daysAny special needs or traits the adopter should know: On special joint dietIf you think Gregory is the one for you - fill out an application today!
Photo of GAS GUZZLER

GAS GUZZLER

Mastiff

Male, 1 yr
Toronto, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
Meet Gas Guzzler, the embodiment of a gentle giant with a heart as big as his paws who weights over 100lbs. Still in the process of revealing all his charms, Gas Guzzler requires a seasoned owner familiar with large breeds to unlock his full potential. Don`t let his strength on the leash fool you; beneath that brawny exterior lies a slobbery, squishy boy whose perpetual wagging nub tail reflects his energy and unwavering friendliness. Call the East Shelter to learn more about Gas Guzzler and the adoption process 416-338-7297.
Photo of Cedar

Cedar

Mastiff

Female, 5 yrs
Simcoe, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Needs experienced adopter, House-trained,
Story
AVAILABLE FOR FOSTER TO ADOPT OR ADOPTION Cedar finally after 3 years had her chance at a life outside of living in a kennel, and this is exactly what this girl needed. Even though her foster to adopt didn’t work out the way we all hoped, we are also so grateful Cedar got the chance to show a great family how amazing and loyal she is, outside of a kennel. Unfortunately, there have been changes in her foster’s life, which has come down to them not being able to adopt Cedar. With her being out of a kennel and into a home, the last thing we are wanting is for her to be put back in a kennel environment, because of how far she has already come living in a home. Going back into a kennel after being in a home for this long, will set her back HUGE and we don’t want that at all. Cedar is getting older, and she deserves to live the rest of her life being able to love her family and be the best friend she is. This girl has been overlooked for 3 years, and honestly, we don’t get it. We have several wonderful dogs living in kennels, getting overlooked for the younger “easy” dogs, when is it their chance to leave and never look back? Cedar is and will always be one of the rescue favorites, because if you’ve personally met her, you know she has the most loving soulful eyes and a loyalty to her that goes unmatched. Intake Date: April 2021 Adoption Fee: $100 Location: Norfolk County, Ontario Cedar Name: Cedar Age: 5 years old Breed: Mastiff Mix Energy: Low to medium Weight: 90lbs Spay/Neuter: Yes Dogs: yes, with proper introduction, she prefers males Cats: yes, dog savvy cats Kids: Yes, but is more comfortable around older kids 10+ recommended Crate Trained: Yes, but doesn’t really need one House Trained: Yes Any Aggression (food or other): Comes from an abusive past, therefore needs a quieter household with a strong leader who she can trust and feel safe with. She does great with woman, men she is extremely selective and needs more time and patience to bond with them. Other Observations: Cedar is very smart so takes to training very well, which is great as this has continued to help her progress with building confidence. Because she can be timid or shy, she would do amazing in a home with a confident owner. Also, she needs an experienced dog handler to lead her. She cannot be in a hectic home or a home with people who are not gentle with her. Due to her abuse in her pass, a home with hand raising and yelling will cause Cedar to be reactive/protective. In a quiet loving fun home, she’s a character who makes you laugh and is great a cuddling. A home with limited guests is best suited for her. From Cedars Foster: We've had Cedar as a foster now for more than a couple of months. She's been such a good dog! This was our first experience fostering. It's been a time of laughter because we've watched her play more like a little puppy than her actual age. Throwing Herself on the grass and literally doing grass angels all 4 paws in the air. Oh, and this is her most relaxed state is on her back sleeping. It's so funny to see a dog do. She's accompanied on many walks and although never really long ones, she Loves to stop and smell the roses! We had our routine down, out for a pee first thing as my boyfriend was up for work at 530am. Then, I'd go put a pair of pants and she knew it was time for a walk. She'd Wait by the front door for her collar and leash. and just sit patiently. And I mean patient. I've never seen such a patient dog! We would come home after our walk, hopefully she pooped, to make room for her breakfast. And most of the time she did like clockwork! So, I'd come home and it was time to multi-task. Get her breakfast and mine, including my coffee! Her kibble was mixed with a tbsp of coconut oil melted on it. I'd tell her it was going to be so yummy, and she’d come as soon as it was on her mat with fresh water. If she didn't eat it all, I'd have to stir it up a bit so it wasn't all chunked up together. Her day comprised or sleeping under my work desk at home while I work. I knew it was time to go out when she’d wake up. When my boyfriend came home, she was so happy to see him, she tried to jump up as though she was giving him a big hug. This dog has so much love to give. She loves to cuddle!! She slept with us. She had a bed so when things got too hot, she went to the floor or on her bed. A fresh water bowl not far from her at all times. Supper time, so time for me to be done work. She came first. I mixed her kibble with a beef bouillon mix from the pet store with ¼ cup of warm water and stirred it all up. She loves that! After supper, there was another walk for her alone with me or with both my boyfriend and I. But around 7 or 8pm, she'd start to act funny. Yes, she was ready for bed already. It forced us to relax earlier than usual. Have our cuddle time with her. And this dog can sleep! She loves her sleep. She was just the right speed of energy! When she was trying to get our attention, it was when we'd be tired, she'd get her loudest toy and play with it! Yes, just like a child. She is truly a remarkable dog. She has a big heart and recognizes the same in others. She loves to wake up my teenage son in the morning for school and when there is no school. I think mostly she wanted to see what was on his bed as he constantly leaves his dishes there from snacks. I can't say enough good things about Cedar. She was my first foster; she would have been my first dog. She deserves more than we can offer her now with my son having sleep issues which will turn into health issues if not properly addressed and I don't want anything but love to be felt for this dog. She deserves the world. For more information, please contact us at Jen@fightagainstbreedracism.com or Kari@fightagainstbreedracism.com You can find our form “Dog Adoption Application" at: https://form.jotform.com/213266369147057 (Please ensure all references listed on your application have the following information provided: Name, Number and a Valid Email) You can find our form "Dog Foster Application Form" at: https://form.jotform.com/213266598899277 (Please ensure all references listed on your application have the following information provided: Name, Number and a Valid Email)

Search for a Mastiff puppy or dog

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

Mastiff puppies and dogs in Ontario cities

Mastiff Puppies near me Mastiff in Acton Mastiff in Alliston Mastiff in Almonte Mastiff in Amherstburg Mastiff in Angus Mastiff in Arnprior Mastiff in Aylmer Mastiff in Ayr Mastiff in Azilda Mastiff in Barrie Mastiff in Beamsville Mastiff in Beeton Mastiff in Belleville Mastiff in Binbrook Mastiff in Blenheim Mastiff in Bobcaygeon Mastiff in Bolton Mastiff in Bowmanville Mastiff in Bracebridge Mastiff in Bradford Mastiff in Brantford Mastiff in Brighton Mastiff in Brockville Mastiff in Caledon East Mastiff in Caledonia Mastiff in Campbellford Mastiff in Carleton Place Mastiff in Casselman Mastiff in Chatham Mastiff in Chelmsford Mastiff in Clinton Mastiff in Cobourg Mastiff in Cochrane Mastiff in Collingwood Mastiff in Cornwall Mastiff in Corunna Mastiff in Crystal Beach Mastiff in Deep River Mastiff in Delhi Mastiff in Dorchester Mastiff in Dryden Mastiff in Dunnville Mastiff in Elliot Lake Mastiff in Elmira Mastiff in Embrun Mastiff in Espanola Mastiff in Essex Mastiff in Exeter Mastiff in Fergus Mastiff in Fort Erie Mastiff in Fort Frances Mastiff in Gananoque Mastiff in Georgetown Mastiff in Goderich Mastiff in Gravenhurst Mastiff in Guelph Mastiff in Haileybury Mastiff in Hamilton Mastiff in Hanover Mastiff in Hawkesbury Mastiff in Hearst Mastiff in Huntsville Mastiff in Ingersoll Mastiff in Innisfil Mastiff in Iroquois Falls Mastiff in Kanata Mastiff in Kapuskasing Mastiff in Kemptville Mastiff in Kenora Mastiff in Keswick Mastiff in Kincardine Mastiff in King Mastiff in Kingston Mastiff in Kirkland Lake Mastiff in Kitchener Mastiff in Leamington Mastiff in Lindsay Mastiff in Listowel Mastiff in Lively Mastiff in London Mastiff in Manotick Mastiff in Marathon Mastiff in Meaford Mastiff in Midland Mastiff in Milton Mastiff in Mitchell Mastiff in Mount Albert Mastiff in Mount Forest Mastiff in Napanee Mastiff in Newcastle Mastiff in New Hamburg Mastiff in New Liskeard Mastiff in Niagara Falls Mastiff in Nobleton Mastiff in North Bay Mastiff in Orangeville Mastiff in Orillia Mastiff in Oshawa Mastiff in Ottawa Mastiff in Owen Sound Mastiff in Paris Mastiff in Parry Sound Mastiff in Pembroke Mastiff in Perth Mastiff in Petawawa Mastiff in Peterborough Mastiff in Petrolia Mastiff in Picton Mastiff in Port Colborne Mastiff in Port Dover Mastiff in Port Elgin Mastiff in Port Hope Mastiff in Port Perry Mastiff in Prescott Mastiff in Renfrew Mastiff in Richmond Mastiff in Ridgetown Mastiff in Rockland Mastiff in Rockwood Mastiff in Russell Mastiff in Sarnia Mastiff in Sault Ste. Marie Mastiff in Shelburne Mastiff in Simcoe Mastiff in Smiths Falls Mastiff in Smithville Mastiff in Southampton Mastiff in Stayner Mastiff in St Catharines Mastiff in St George Mastiff in St Marys Mastiff in Stouffville Mastiff in Stratford Mastiff in Strathroy Mastiff in St Thomas Mastiff in Sturgeon Falls Mastiff in Sudbury Mastiff in Sutton West Mastiff in Tavistock Mastiff in Thunder Bay Mastiff in Tilbury Mastiff in Tillsonburg Mastiff in Timmins Mastiff in Toronto Mastiff in Tottenham Mastiff in Uxbridge Mastiff in Vineland Mastiff in Walkerton Mastiff in Wallaceburg Mastiff in Wasaga Beach Mastiff in Waterford Mastiff in Welland Mastiff in Wellesley Mastiff in Windsor Mastiff in Woodstock

Mastiff shelters & rescues in Ontario

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

Here are a few organizations

Rescue

Alliston & District Humane Society

5545 Tosorontio Concession 4, Everett , ON L0M 1J0

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

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Rescue

Alliston & District Humane Society

5545 Tosorontio Concession 4, Everett , ON L0M 1J0

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

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Rescue

Dog Tales Rescue and Sanctuary

1405 19th Sideroad, King City , ON L7B 1K5

Pet Types: cats, dogs

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Rescue

Dog Tales Rescue and Sanctuary

1405 19th Sideroad, King City , ON L7B 1K5

Pet Types: cats, dogs

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Rescue

Dog Tales Rescue and Sanctuary

1405 19th Sideroad, King City , ON L7B 1K5

Pet Types: cats, dogs

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Rescue

Dog Tales Rescue and Sanctuary

1405 19th Sideroad, King City , ON L7B 1K5

Pet Types: cats, dogs

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Shelter

City of Toronto Animal Services West Region

146 The East Mall, Toronto , ON M8Z 5V5

Pet Types: cats, dogs

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Shelter

Guelph Humane Society

500 Wellington Street, West, P.O. Box 684, Guelph , ON N1H 6L3

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

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Shelter

City of Toronto Animal Services East Region

821 Progress Avenue, Toronto , ON M1H 2X4

Pet Types: cats, dogs

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Rescue

Taffy's Legacy Canine Rescue & Rehabilitation

Kitchener , ON N2L 5H3

Pet Types: dogs

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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 information

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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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