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Mastiff puppies and dogs in Mount Vernon, Ohio

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

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Adopt a Mastiff near you in Mount Vernon, Ohio

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These Mastiffs are available for adoption close to Mount Vernon, Ohio.
Photo of Rome

Rome

Mastiff

Male, 2 yrs 4 mos
New Albany, OH
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
# Rome Meet Rome, a striking 2-year-old brown Mastiff who tips the scales at a magnificent 90 pounds of pure intelligence and heart! 🐕 This smart and loving boy is initially shy but warms up right away with a treat. He finds himself in need of a new family due to housing issues. Rome has a cherry eye that will be fixed July 6, along with his neuter. Then, he will be good to go! With his combination of brains and loyalty, Rome is waiting to show you just how much love a big boy can give. 💕
Bonded Pair
Photo of Joker

Joker

Mastiff

Male, Adult
Mansfield, OH
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
🃏 MEET JOKER!! 🃏 Origin Story: Stray turned Sidekick Supreme Joker rolled into the shelter as a stray on 1/15/26 with his ride-or-die bestie, Harley Quinn. We estimate this charming rogue is about 5 years old, and while he may give you a cautious side-eye at first… don’t blink — that phase ends fast. Once he decides you’re not part of the evil plot, Joker reveals his true powers: friendliness, curiosity, and expert-level pet acceptance. He enjoys attention but isn’t a full-time cuddle villain — he prefers to stay mobile, exploring his surroundings like the independent antihero he is. Fuel of choice? 🌭 Hot dogs. Weakness? 💔 Being away from Harley Quinn. When his partner-in-crime is nearby, Joker is all smiles and good vibes, proving that even a trickster needs his trusted sidekick. Joker is ready to leave the shelter and star in his own happily-ever-after issue. Don’t miss your chance to meet this lovable character — hurry in before this comic book legend is adopted! 📍 Joker is located at the Richland County Dog Shelter in Mansfield, OH 📞 Phone: 419-774-5892 📝 It is an application process. You can request one via dogs@richlandcountyoh.gov
Bonded Pair
Photo of Harley Quinn

Harley Quinn

Mastiff Shepherd (Unknown Type)

Female, Adult
Mansfield, OH
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
💥🎀 MEET HARLEY QUINN!! 🎀💥 Origin Story: Stray turned Chaos Queen Harley Quinn bounced into the shelter as a stray on 1/15/26, arriving hand-in-paw with her favorite partner-in-crime, Joker. We think this stunning gal is about 5 years old, and while she may size you up at first… don’t worry — that hesitation disappears faster than a “POW!” bubble. Once she warms up, Harley shows off her true superpowers: friendly charm, adventurous spirit, and elite-level snack appreciation. She loves being petted but isn’t the clingy type — this girl prefers to keep moving, exploring her surroundings like the confident comic book heroine she is. Signature snack? 🌭 Hot dogs. Sidekick status? 🃏 Joker is her number one. When they’re together, Harley is all smiles, proving that every great character shines brightest with their favorite teammate nearby. Harley Quinn is ready to leap off the pages and into her forever home. Don’t miss your chance to meet this bold, beautiful girl — hurry in before her next adventure begins! 📍 Harley Quinn is located at the Richland County Dog Shelter in Mansfield, OH 📞 Phone: 419-774-5892 📝 It is an application process. You can request one via dogs@richlandcountyoh.gov
Photo of Levi

Levi

Mastiff

Male, Adult
Mansfield, OH
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered, Shots are up-to-date,
Story
Hi… um… hello. 👋 My name is Levi. (This is the part where I pretend I’m not nervous.) I came in as a stray on 12/11/25 and the humans say I’m about 5 years old. Personally, I don’t keep track of time—just snacks and friends. I’m very friendly and playful, and I really want to be your buddy… I just might wiggle a little while introducing myself. Full disclosure: I’m a bit too thin right now, so I’m accepting applications for someone willing to help me put on some healthy weight. Preferably with treats. Lots of treats. 🍖 I am a total sweetheart and promise to repay you with love, smiles, and enthusiastic tail wags. Anyway… yeah… if you’re looking for a good boy who’s trying his best—hi, it’s me. I’m available for adoption, so please come meet me before I overthink this introduction any more. 😅 📍 Richland County Dog Shelter Mansfield, OH 📞 419-774-5892 📝 Adoption is an application process. You can request one via dogs@richlandcountyoh.gov
Photo of Fernie *Courtesy Post*

Fernie *Courtesy Post*

Mastiff

Female, Young
Columbus, OH
Size
(when grown) -
Details
Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Fern is now available please read her PetFinder post  https://www.petfinder.com/dog/fernie-d98ba9c5-c010-4bc0-b0e0-0e56e047e84b/pa/warrington/brookline-labrador-rescue-pa06/details/Click here to watch a video of Fernie *Courtesy Post*.Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, Michigan, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. &#226&#128&#139Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845   March 7, 2026, 8:15 pm
No photo available for Athena *Courtesy Post*

Athena *Courtesy Post*

English Mastiff

Female, Adult
Columbus, OH
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Not good with cats, Spayed or Neutered,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Meet Athena! Athena is a 4 year old gorgeous brindle mastiff. She is already spayed and has had gastropexy surgery done. Athena would benefit from training and would do best with someone who is strong enough for her as she is a leash puller. Athena is a big girl who needs assistance getting into vehicles. Athena needs a home with no cats, farm or small animals of any kind as she has a high prey drive.Click here to watch a video of Athena *Courtesy Post*.Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, Michigan, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. ​Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845   July 10, 2026, 5:07 pm

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Mastiff shelters & rescues in Mount Vernon, Ohio

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

Here are a few organizations closest to you:

Rescue

26.8 miles

New Albany Pet Rescue

New Albany, OH 43054

Pet Types: cats, dogs

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Shelter

26.9 miles

Richland County Dog Warden's Office & Shelter/Adoption Center

810 N. Home Rd., Mansfield, OH 44906

Pet Types: dogs

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Rescue

34.3 miles

Mastiffs to Mutts Ohio

Columbus, OH 43235

Pet Types: dogs

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Shelter

47.3 miles

Canine Collective

11144 US-42N, Plain City, OH 43064

Pet Types: dogs

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Shelter

47.7 miles

Union County Humane Society

16540 County Home Road, Marysville, OH 43040

Pet Types: cats, dogs

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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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