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Mastiff puppies and dogs in Ontario, Oregon

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

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Adopt a Mastiff near you Mastiff in cities near Ontario, Oregon Other pups in Ontario, Oregon Search for a Mastiff puppy or dog near you Browse Mastiff puppies and dogs in nearby cities Browse related breeds in Ontario, Oregon Mastiff shelters and rescues in Ontario, Oregon Learn more about adopting a Mastiff puppy or dog

Adopt a Mastiff near you in Ontario, Oregon

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 Ontario, Oregon

These Mastiffs are available for adoption close to Ontario, Oregon.
Photo of Ricky

Ricky

Mastiff Mixed Breed (Medium)

Male, 6 yrs 8 mos
Nampa, ID
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Not good with cats, Spayed or Neutered,
Story
Ricky is a 6-year-old Mastiff mix weighing in around 90 pounds, and despite his age, he is 100% puppy at heart. If you’re dreaming of a dog with a big head, big feet, and an even bigger personality, Ricky is your guy. He’s goofy, enthusiastic, and full of life — the kind of dog who brings joyful chaos wherever he goes. Ricky doesn’t always realize just how big he is, earning him the affectionate title of “bull in a china shop.” However, the bull also likes to curl up on his favorite blanket for naps. 🏡 Home Requirements: • Must be the only pet (no other dogs or animals) • No small children — Ricky’s size and excitement can be a bit too much Ricky would thrive in an adult-only home with someone who loves big dogs with big energy and is ready to help him channel that puppy enthusiasm into walks, play, and structure. If you’re looking for a lovable, oversized goofball who will keep life interesting and your heart full, Ricky is ready to be your one-and-only 💙

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Simba

English Mastiff

Male, Senior
Boise, ID
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Spayed or Neutered,
Story
-

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Rye

English Mastiff

Male, Young
Boise, ID
Size
(when grown) -
Details
-
Story
Rye is a beautiful male brindle Mastiff that is 2 yo. He was going to be euthanized because he was terrified when he was picked up and taken to dog shelter. (He had only been there 3 days) We saved him and are having him transported to Burns Oregon area to be fostered. Volunteers at shelter loved him and say he does good with other dogs. We will learn more about him after he has been with foster.

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Photo of Tiramasu

Tiramasu

Mastiff

Male, Adult
Boise, ID
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
-

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Photo of Bruce

Bruce

English Mastiff

Male, Adult
Boise, ID
Size
(when grown) -
Details
-
Story
Bruce is a 5 yo Mastiff. He is a sweet, loving dog, and a true gentle giant. His owners believe he deserves better than what they can provide. Bruce has extreme anxiety on hard surface floors. He only feels comfortable on carpeted floors. They even tried carpet runners....with no success. They describe him as a lovable, lazy dog. He is currently located in Post Falls ID

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Photo of Dewey

Dewey

English Mastiff

Male, Young
Boise, ID
Size
(when grown) -
Details
-
Story
Dewey is a 1 yo Mastiff mix needing a new home asap, He is a happy active boy who will thrive as an only dog.

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

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Mastiff puppies and dogs in nearby cities

Mastiff Puppies near me Mastiff in Caldwell, ID Mastiff in Emmett, ID Mastiff in Middleton, ID Mastiff in Nampa, ID Mastiff in Payette, ID Mastiff in Star, ID Mastiff in Weiser, ID

Related breeds in Ontario, Oregon

Bullmastiffs in Ontario, Oregon Neapolitan Mastiffs in Ontario, Oregon Saint Bernards in Ontario, Oregon

Mastiff shelters & rescues in Ontario, Oregon

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

Here are a few organizations closest to you:

Rescue

41.5 miles

Lake Lowell Animal Rescue

12888 Pheasant Circle, Nampa, ID 83686

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

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Rescue

48 miles

Idaho Mastiff Rescue, LLC

10800 W Smoke Ranch Dr, Boise, ID 83709

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 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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