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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!
We'll also keep you updated on King Tutt's adoption status with email updates.
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King Tutt

Mastiff/Mixed Breed (Large)

Male, Young
Mississauga, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Not good with cats, House-trained,
Story
King Tutt / Male / 2 years / 66 lbs / Mastiff Mix / Good with Dogs / No Cats Please / Good with Children / From Tennessee / Fostered in Toronto ** Follow King Tutt’s journey on Instagram @tk_fetchfosters Meet King Tutt! This beautiful brindle boy came to us from Tennessee where he, his brother and dad were left without a home. Despite his difficult past, King Tutt is full of charm and is sure to win over everyone he meets. King Tutt’s foster’s describe him as loyal, loving and playful. He loves to make new friends, whether human or canine. Being with his people is important to him, whether it is out on an adventure, playing at home, or lounging on the couch. King Tutt can be a silly guy, who enjoys exploring, playing with toys, swimming, and running in the yard. He will make a great addition to an active family. King Tutt is a social butterfly, who loves to meet new people, and soak up attention from those he already knows. He has shown no hesitation, and will greet people with excitement, ready for scritches and cuddles. King Tutt has met older children and done well. He sees them as more humans to give him love and attention and will soak it all up. He can get excited and jump, so interactions should be monitored. Although he has not met young children, given his demeanor we think he would do well with respectful, dog-savvy children. King Tutt is very adaptable and is happy to be where his people are. Given this he would do well in any living environment, so long as he has access to greenspace. A home with a yard would be amazing, as he loves to run and play, but if given sufficient exercise he will be good. He really does love to explore and play outdoors, so an active family that shares his love of nature would be perfect. Playing with other dogs is one of King Tutt’s favourite activities. He currently lives with another dog and enjoys his company. King Tutt would do well solo as well, he would just need opportunities to socialize and play with other dogs. King Tutt has not met cats yet, so we are looking for a cat-free home at this time. King Tutt is a busy guy, who needs both physical and mental activities each day. He is gradually learning his leash manners, and enjoys the time outside to sniff. He has shown no signs of reactivity, or fear with other people/dogs, or city sounds. He can pull when he gets excited, so his new family should be prepared to continue working with him with his leash manners. At home King Tutt is learning his house manners with ease. He is house-trained, crate-trained and working on his commands. He has not been given free reign of the house if he is alone yet, as he is curious and may counter surf. King Tutt is not overly food motivated, but he loves to make his humans proud, so training is lots of fun! Prior to coming into care, King Tutt tested positive for Ehrlichia which is a tick-borne infection and is not contagious. A CBC was performed to see if there is an active infection. King Tutt 's CBC came back indicating that there is no active infection however it is recommended that Ehrlichia positive dogs get an annual blood test to monitor and that pre-op blood work including a CBC test and platelet count be performed before any surgeries or dental extractions. King Tutt also has mild enamel hypoplasia which is thinning of the enamel on his teeth. Homecare will help with brushing but he may require professional dental cleaning in the future. He should avoid hard chews, toys, and treats as his teeth will be more prone to breaking during play. If you’re interested in adopting King Tutt, please apply at https://www.fetchandreleash.ca/adoption-info#adoption-form King Tutt’s adoption fee is $850. To learn more about our adoption fees and the process, please visit our FAQs at https://www.fetchandreleash.ca/about-us#about-faqs.
We'll also keep you updated on Rooster's adoption status with email updates.
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Rooster

Mastiff

Male, 6 mos
Guelph, ON
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Hello! My name is Rooster!I`ve been at the Guelph Humane Society for many months receiving care for my uncomfortable skin infection. I`m feeling much better now and ready to find my new home! I still require weekly medicated baths for the time being. I`m a big sweetheart. I can be nervous of new people which can sometimes involve barking. I warm up pretty quickly with a patient, gentle approach. I am playful and enjoy other dogs. I`m looking for a home that has the time and patience for a puppy and will help me continue building my confidence!MY IDEAL HOME INVOLVES…CHILDREN: Yes, older and respectful children.OTHER DOGS: Yes, a friendly dog who would enjoy playing with a puppy.CATS: Yes, a cat confident around dogs and not overwhelmed by puppy exuberance.FIRST-TIME DOG OWNERS: No, I would do best in a home that has experience caring for dogs previously.FENCED-IN YARD: Highly recommended given my size and energy.HOUSING ENVIRONMENT: No apartment buildings or environments where strangers may get too close inadvertently and cause me to bark.SOMEONE HOME MOST OF THE DAY: In the beginning, yes, but I can be left for longer times as I adjust to the new home.SOME OTHER THINGS TO KNOW ABOUT ME…ACTIVITY LEVEL: Medium-high puppy energy!HOUSE-TRAINED: Not fully, I will require house-training assistance.If you think I could be a good match for your home, click the `adopt me` button to apply!
We'll also keep you updated on Buster's adoption status with email updates.
Photo of Buster

Buster

Mastiff/American Bulldog

Male, 4 yrs 1 mo
Everett, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
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We'll also keep you updated on Duke's adoption status with email updates.
Photo of Duke

Duke

Mastiff/Bullmastiff

Male, 4 yrs 2 mos
Mississauga, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained,
Story
Meet Duke, this brindle stud is so much more than meets the eye. Landing in the county pound along with his sons and a few other dogs, these boys were headed for euthanasia when our partner just couldn't bear it, knowing how long they had sat waiting and having truly bonded with the local dog catcher and his wife. Despite his large size, Duke is a laid-back and ultra-friendly guy. He has stolen the hearts of many and quickly bonds with anyone who gives him attention and has shown a gentle and affectionate nature around children. Duke enjoys his time with kids, especially those aged 8 and up. Duke walks well on the leash, and with consistent practice, could become an expert. He loves to sniff and explore and has recently discovered a love for swimming in the pond! Duke would make an excellent companion for cottage trips or hiking adventures. Duke is a loyal and charming dog, eager to please. He would thrive in a family willing to invest time in his continued training and development. His laid-back nature and friendliness make him a great candidate for a family dog. Duke is a heartthrob waiting for his chance to shine in a loving home. He’s patient, deserving, and ready to give all his love to a family that will cherish him. If you’re looking for a loyal and loving companion, Duke is your guy.
We'll also keep you updated on Maggie's adoption status with email updates.
Photo of Maggie

Maggie

Mastiff

Female, 1 yr
Guelph, ON
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Hello! My name is Maggie!I came into the Guelph Humane Society in June very scared and under-socialized. My GHS friends have been working very hard to help me learn that the world isn`t so scary. My progress has been slow and I`m looking for an adopter who will join along in this journey with me until I`m ready to go home. I am sweet and enjoy tasty treats and neck scratches. MY IDEAL HOME INVOLVES…CHILDREN: No, I`m looking for an adult-only home.OTHER DOGS: Potentially, my experience with other dogs is limited but I could benefit from having a confident, easy-going dog to learn from.CATS: Potentially, with cat confident around dogs.FIRST-TIME DOG OWNERS: No, I am looking for a family that has lots of dog experience.FENCED-IN YARD: Highly recommended.HOUSING ENVIRONMENT: No apartment buildings due to my fearful nature.SOMEONE HOME MOST OF THE DAY: Just in the beginning while I adjust.SOME OTHER THINGS TO KNOW ABOUT ME…ACTIVITY LEVEL: Medium.HOUSE-TRAINED: No, I will need some patience with house-training.If you think I could be a good match for your home, click the `adopt me` button to apply!FOSTER ME! I’m excited to be selected as part of the Paisley Project and I’m looking for a foster home! If your home environment matches what I’m looking for based on the information above, please consider applying to foster me by copying and pasting the following link to fill out the questionnaire: https://guelphhumane.ca/wp-admin/admin-ajax.php?action=frm_forms_preview&form=7y88o. The Paisley Project aims to match selected, long-stay animals at GHS with fosters that can provide a home that gradually introduces them to the everyday experiences of life as a pet. Fosters will offer the routine, structure and stability needed to help get animals ready for their new family. Learn more at https://guelphhumane.ca/the-paisley-project/.
We'll also keep you updated on Jake's adoption status with email updates.
Photo of Jake

Jake

Mastiff

Male, 1 yr
Guelph, ON
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Hello! My name is Jake!I came into the Guelph Humane Society in June very scared and under-socialized. My GHS friends and foster parents have been working very hard to help me learn that the world isn`t so scary. Once I warm up, you will see I have the best wiggle-bum. And I enjoy neck scratches and bum scratches. I`m still working on my confidence as little things can scare me, such as noises and movements. When I feel comfortable though, I can be quite silly and playful. I`m looking for an experienced home that is patient and can dedicate time to helping me continue to come out of my shell!MY IDEAL HOME INVOLVES…CHILDREN: No, I`m looking for an adult-only home.OTHER DOGS: No, unfortunately I don`t have much experience with dogs and aren`t very comfortable with them.CATS: Potentially, with cat confident around dogs.FIRST-TIME DOG OWNERS: No, I am looking for a family that has lots of dog experience.FENCED-IN YARD: Required.HOUSING ENVIRONMENT: No apartment buildings due to my fearful nature.SOMEONE HOME MOST OF THE DAY: Not necessarily.SOME OTHER THINGS TO KNOW ABOUT ME…ACTIVITY LEVEL: Medium.HOUSE-TRAINED: Yes!If you think I could be a good match for your home, click the `adopt me` button to apply!

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

Fetch + Releash Dog Rescue

Mississauga , ON L5M 1Y3

Pet Types: dogs

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Rescue

Backstreet Paws Rescue

Mississauga , ON L5J 4G9

Pet Types: 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

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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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

Taffy's Legacy Canine Rescue & Rehabilitation

Kitchener , ON N2L 5H3

Pet Types: dogs

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Rescue

Oxford County Animal Rescue

789 Dundas Street, Woodstock , ON N4S 1E1

Pet Types: cats, dogs

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Rescue

F.A.B.R Rescue

3111 Highway 3, Simcoe , ON N3Y 4J9

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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