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Mastiff puppies and dogs in London, Ontario

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

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Adopt a Mastiff near you in London, 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 London, Ontario

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

Mastiff Labrador Retriever

Male, 2 yrs 5 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.

These pups are in London, Ontario too!

Below are our newest added Mastiffs available for adoption in London, Ontario. To see more adoptable Mastiffs in London, Ontario, use the search tool below to enter specific criteria!
We'll also keep you updated on Daltry's adoption status with email updates.
Photo of Daltry

Daltry

St. Bernard

Male, Adult
London, ON
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Not good with dogs, House-trained, Spayed or Neutered,
Story
Name: Breed: Age: Gender: Weight: Good with cats or Small Animals: Good with dogs: Good with Young Children: Good with Older Children: Fenced Yard Required: Crate-Trained: House Trained: Name: Daltry Breed: Saint Bernard Age:  4 Years DOB:12/03/2021 Gender: Male (neutered) Weight: 145 Lbs Good with cats: Unknown Good with dogs: Prefers to be the only dog Good with Children: Older Children due to his size Fenced Yard Required: Prefered Crate-Trained: Not needed House Trained: Yes Location: London, Ontario Adoption Fee: $750.00 You must complete an adoption application to be considered for adopting Daltry    https://www.animalert.ca/apply/dog-adoption **Introducing Daltry!** Daltry is a loving and gentle giant in search of his forever home. He was rescued from a shelter in Northern Ontario along with his daughter, McVie, who will also be available for adoption soon. **About Daltry:** Daltry is known for his affectionate nature and enjoys snuggling. He has a habit of leaning against his humans, earning him the title of "Professional Leaner." He appreciates the comforts of home, including curling up on a sofa or sleeping in bed with his human companions. Daltry thrives on companionship and is best suited for someone who is home most of the time. He would be happiest as the only dog in the household, as he has shown some jealousy when his human gives attention to other dogs. This well-mannered dog is not destructive in the home, making him a great addition to any family. Due to his size and the current weather conditions, Daltry has not yet had the opportunity to work on his leash manners, which will need to be further developed. Daltry has been neutered, vaccinated, heartworm tested, and microchipped. His adoption fee is $750.00, which includes his health records and microchip registration. If you would like to give Daltry his forever home, please complete the adoption application at https://www.animalert.ca/apply/dog-adoption If you wish to learn more about Animalert, please visit our website at     https://www.animalert.ca/ Due to the volume of emails, phone calls and messages Animalert receives, it is not always possible to respond to every application. We do review every application.  We will only be contacting applications that we feel are a match for the pet they are applying for.  Thank you for your understanding.    * Please note - we may take 24-48 hours to respond, adoption will be to approved homes only, we reserve the right to deny adoption to anyone without providing a reason. Animalert does not adopt outside of Canada. *   If you are interested in providing a forever home, please complete the online adoption application at this link, https://www.animalert.ca/apply/dog-adoption. If you are interested in learning more about Animalert Please visit our website at       http://animalert.ca Due to the volume of emails, phone calls and messages Animalert receives, it is not always possible to respond to every application. We do review every application. We will only be contacting applications that we feel are a match for the pet they are applying for. Thank you for your understanding.   Only those who complete an adoption application will be considered for adoption.     * Please note - we may take 24-48 hours to respond, adoption will be approved to approved homes only, we reserve the right to deny adoption to anyone without providing a reason. Animalert does not adopt outside of Canada at this time. *   January 17, 2026, 10:45 am

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Mastiff shelters & rescues in London, Ontario

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

Here are a few organizations closest to you:

Rescue

32.4 miles

Oxford County Animal Rescue

789 Dundas Street, Woodstock, ON N4S 1E1

Pet Types: cats, dogs, rabbits

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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 basics

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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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