Adopt

Mastiff puppies and dogs in Wellesley, Ontario

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

Picture of Mastiff

Adopt a Mastiff near you in Wellesley, Ontario

We don't see any Mastiffs available for adoption right now, but new adoptable pets are added every day. Try a different search below!

Or, how about these Mastiffs in cities near Wellesley, Ontario

These Mastiffs are available for adoption close to Wellesley, Ontario.
We'll also keep you updated on Ranger's adoption status with email updates.
Photo of Ranger

Ranger

Mastiff Labrador Retriever

Male, 2 yrs 7 mos
Woodstock, 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, Spayed or Neutered, Shots are up-to-date,
Story
Ranger is vocal and loves to tell you about his day and then tell you again! He loves to be pet and looks at a gate as a challenge, not a barrier. He can be stubborn and defiant, so a strong Alpha owner is needed or he will take control. He is a powerful puller on leash, so a harness is best. He likes car rides and is crate trained. He is looking for a forever home that has some experience with the food motivated lab and stubborn mastiff. Due to his size and strength, older children are best. He has a great smile, and will show all his teeth when he is happy or nervous. He is up to date with his vaccines, flea and tick treated, microchipped, Heartworm negative and is neutered. His adoption fee is $500. You must be 21 years old to adopt and provide vet and personal references. An application to adopt him can be found on our website www.oxfordcountyanimalrescue.com. Click on Adopt, then Dogs for Adoption and scroll to the bottom of the page. All applications are reviewed, and if we feel you might be a good fit for him, you will be contacted to arrange a home visit as well as for permission to speak with your vet. Repeated phone calls and emails with not advance your application. We are a volunteer, foster based rescue and there is no opportunity to meet him before an application has been approved. We thankyou for respecting these guidelines.
We'll also keep you updated on London's adoption status with email updates.
Photo of London

London

Mastiff Boxer

Female, 3 yrs 1 mo
Guelph, ON
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
-
Story
Hello! My name is London!I`m a fun and loving girl! I am snuggly and affectionate. I love treats and toys, which makes training a blast! I sometimes get excited and like to grab sleeves with my mouth. I thought that was fun but apparently humans don`t enjoy it as much as I do. No worries though, I`m super smart and doing well with training - I`m learning about other fun things to do instead. If you love cuddling, playing and snoring, I am definitely the girl for you!MY IDEAL HOME INVOLVES…CHILDREN: Teenagers may be ok. No young kids given my mouthing can sometimes be hard.OTHER DOGS: I don`t seem to enjoy the company of other dogs and I`m looking to be the only dog.CATS: Potentially, with cat experienced and confident around dogs.FIRST-TIME DOG OWNERS: I would do best with someone who has dog experience.FENCED-IN YARD: Required.HOUSING ENVIRONMENT: Any with yard.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!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 Beth's adoption status with email updates.
Photo of Beth

Beth

Mastiff Cane Corso

Female, 1 yr
London, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Beth 1 year old, Mastiff Mix Fostered in London, On Vaccinated & Spayed Microchipped Good with dogs, cats, kids Adoption Fee: $700 Beth is a one-year-old princess with a puppy heart and a deep, joyful love for life and the people in it. She’s the kind of girl who lights up the moment you walk through the door — tail wagging, eyes sparkling, and ready to remind you exactly where the couch is… because together time is her favorite time. Beth is high energy and playful, but she’s just as passionate about her snuggles. One minute she’s chasing a ball, proudly parading around with the biggest stick she can find, or watching squirrels from the yard or window… and the next, she’s curled up beside you for a serious nap. She’s a true couch-and-bed girl who lovingly claims her favorite blankets and pillows — but always makes room for her humans and dog friends! This sweet girl adores attention and companionship. She’ll happily follow you from room to room just to be near her people. She enjoys sunny spots, open windows, outdoor adventures, and simply being part of the day’s rhythm. Beth is social and gentle-natured with zero prey drive — she loves cats, quickly bonded with her foster dog brothers, and is wonderful with kids. She lives to eat (and eats to live!), is fully house trained, and fits beautifully into a home routine. Her days are filled with toys, zoomies, sock-stealing missions, TV cuddles, and gentle kisses. Smart and eager to please, Beth is well trained and loves to keep learning. She’ll offer her paw to show affection — and, if we’re being honest, to politely request a cookie too. Beth is in care through no fault of her own — because sometimes life happens. What she’s hoping for now is a forever family who will match her love, loyalty, and enthusiasm. A family who will give her the support, playtime, encouragement, and cuddles she deserves as she grows into her very best self.
We'll also keep you updated on Oscar's adoption status with email updates.
Photo of Oscar

Oscar

Mastiff

Male, 3 yrs
Hamilton, ON
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Oscar is a handsome three-year-old Mastiff cross with a big body and an even bigger heart. This lovable giant has quickly become a staff favorite thanks to his sweet nature, eagerness to please, and calm presence in his kennel. Despite his size, Oscar is a gentle soul who enjoys spending time with people and thrives on connection and positive interaction. Oscar is a medium-energy dog with short bursts of playful enthusiasm —especially when toys are involved! He absolutely loves playtime and is easy to redirect, making him a great candidate for continued training. He’s a smart boy who responds well to guidance and is already showing that he has the potential to become a well-mannered, balanced companion with the right structure in place. Due to his size, strength, and current lack of manners, Oscar is looking for a home with large-breed experience and a confident, physically capable handler. He doesn’t quite realize how big he is, so ongoing positive reinforcement training will be key to helping him learn boundaries and polite behaviors. Enrolling him in training classes is strongly recommended and will set him up for success. Oscar does show some reactivity toward other dogs, particularly males that react to him. However, his behavior is manageable with the right approach. He would benefit from a home committed to maintaining safe distances, using high-value rewards to build positive associations, and consistently working on obedience while keeping him under threshold. With patience, structure, and continued guidance, Oscar has great potential to make progress in this area. Because of his size and strength, a home without young children is recommended. Oscar will also need daily physical exercise and mental enrichment to keep him happy and fulfilled. The good news is that he settles well in his kennel and may do very well with crate training in his future home. Oscar is a sweet, intelligent dog who is ready to thrive with the right match. With consistency, training, and lots of love, he has all the makings of a loyal, well-balanced companion. Please complete an adoption application: https://www.hamilton.ca/home-neighbourhood/animals-pets/adopt-or-foster-pet/adoptions Animal adoptions and viewing are by appointment only. This allows our Adoption Staff to spend quality time with each potential home to ensure the most successful matches are made between the animals and their new families. *Please note: we only adopt within Ontario

Search for a Mastiff puppy or dog

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

Mastiff puppies and dogs in nearby cities

Related breeds in Wellesley, Ontario

Mastiff shelters & rescues in Wellesley, Ontario

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

Here are a few organizations closest to you:

Rescue

24.4 miles

Oxford County Animal Rescue

789 Dundas Street, Woodstock, ON N4S 1E1

Pet Types: cats, dogs, rabbits

More an arrow icon

Shelter

25.6 miles

Guelph Humane Society

190 Hanlon Creek Blvd, Guelph, ON N1C 0A1

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

More an arrow icon

Rescue

39.4 miles

Baladi & Sled Dog Rescue of Ontario - Southwest/London

London, ON N5V 2E6

Pet Types: cats, dogs

More an arrow icon

Shelter

48.4 miles

City of Hamilton Animal Services

247 Dartnall Road, Hamilton, ON L8W 3V9

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

More an arrow icon

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!

magnifying glass with cat and dog

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 basics

clipboard with list

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.

Learn More an arrow icon