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Mastiff puppies and dogs in Maryland

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

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Adopt a Mastiff near you in Maryland

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

Bear

Mastiff

Male, Young
Westminster, MD
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
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Story
You can fill out an adoption application online on our official website.All of the animals posted on our site have been temperament tested. While not all are in the immediate area, once we have processed and approved your application, we will move the dog to our adoptive area for you to meet, greet and hopefully adopt. Sometimes we will have more than one application on a dog. That does not mean it automatically goes to another family but you should be aware of the fact that until you are approved and set up for the meet/greet.. the dog could get adopted by another applicant.Hello to all of my fellow Mastiff lovers.   I would like to introduce myself.  My name is Bear and I am the quintessential Mastiff mix of loyalty, playfulness, gentleness, and protectiveness.  I would love to share my home with a human/s who know my breed well, as I am not a novice owner.  I take my job seriously and want you to know when there is a shift in the environment that may need your attention.   I am not a big barker but I am vigilant until you tell me that everything is ok.     I enjoy my crate and it can be a place of calm if I start to take my job too seriously.  I am completely house trained as well.     My strengths:  Smart - I know my 8 basic safety commands in varying capacities - Look, Touch, Sit, Down Stay, Come, Leave it, and Place.  Playful - I love toys, running, jumping, and hanging with my people.  Polite - I am polite on leash unless something fun comes my way like chickens or dogs.   I can become cautious if I see strangers but I move along fine if you tell me everything's ok.   Quiet - I am not a big barker and would prefer watching as things come and go in my environment.  Loyal - I am the most trustworthy guy you will ever know once I know that you are a part of my pack.  I am trusting and enjoy a cuddle once in a while.  I will look for you and want to be with you always.  Trusting - Once you belong to me, I am yours forever.   I am a great sleeper and love my meals.  I enjoy riding in cars.   I enjoy long walks when the weather is not too hot.  I think I would enjoy hiking a lot.     Things I am working on:  Commands - Perfecting my 8 safety commands.  Trusting new things - The more places I go and the more you can let me watch from a distance, the more I can trust new places.  Trusting new people - I need slow introductions with new people who are confident and want to have a relationship.  I am not interested in casual interactions.  I will do best if I know what you expect of me in these situations but I would prefer not to be pushed or 'talked into' socializing.     I will do better with no children or other pets in the home, as I have a hard time sharing the affection.  I was not proofed with cats so I don't know how I feel about them.     General Mastiff traits -  Mastiffs are known for their gentle, calm, and loyal personalities, making them excellent family pets. They are also protective and courageous, exhibiting a natural instinct to guard their families and homes. Despite their imposing size, Mastiffs are often described as 'gentle giants' due to their affectionate and patient nature.    Here's a more detailed look at their personality traits: Loyal and Devoted: Mastiffs form strong bonds with their families and are known for their unwavering loyalty.    Gentle and Affectionate: They are naturally gentle and affectionate, especially with their family members, and enjoy cuddling and close companionship.    Calm and Patient: Mastiffs are generally calm and patient, making them suitable for households with children and other pets, though early socialization and training are still important.    Protective and Courageous: They possess a natural instinct to protect their families and territory, making them excellent watchdogs.    Intelligent and Eager to Please: Mastiffs are intelligent dogs that learn quickly and respond well to positive reinforcement training methods.    Relatively Quiet: While they can be alert and watchful, they are not typically known for excessive barking.    Can be Suspicious of Strangers: It's common for Mastiffs to be wary of strangers, but with proper socialization, they can learn to be more accepting.    If you are interested in Bear, please fill out an application at: https://reachoutrescue.rescuegroups.org/forms/form?formid=4588    Or contact: rorrcanine@gmail.com   *** Click here to sponsor this dog! ***Visit this organization's web site to see any additional information available about this pet.December 6, 2025, 10:18 pm
We'll also keep you updated on Clover's adoption status with email updates.
Photo of Clover

Clover

Mastiff

Female, Adult
Halethorpe, MD
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Needs experienced adopter, House-trained,
Story
Clover is a bright, curious young Mastiff who has blossomed in foster care. She arrived at our home unsure of toys or play, but quickly learned to fetch, explore, and enjoy affection. Friendly and outgoing, she is playful, eager to learn, and responds well to correction. As a guardian breed, she has developed a natural protectiveness, and with consistent training she’ll become a calm, well-mannered guardian in her new home. Clover walks well on leash, knows her basics, can stay until released, has strong recall, and behaves wonderfully in busy stores like Home Depot and Petsmart. She settles well when left alone and is non-destructive. Clover will thrive in an active home with continued training, socialization, and preferably a fenced yard. She can be adopted with Ginger or separately. Playful, loyal, and smart, Clover has endless potential.
We'll also keep you updated on Ginger's adoption status with email updates.
Photo of Ginger

Ginger

Mastiff

Female, Adult
Halethorpe, MD
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Needs experienced adopter, House-trained,
Story
Ginger is a gentle giant who came to BARCS scared and shut down. With patience in foster care, she’s become a snuggly, affectionate companion who bonds deeply with her people. She is still cautious with the world and hesitant with new people—especially men—but with the right adopter, she will form an even stronger bond. Ginger is sweet, calm, and avoids conflict. She walks beautifully on leash, knows her basic obedience, has good recall, catches treats, and behaves well in stores like Petsmart and Home Depot. She is generally housebroken but may have accidents when left alone; however, she is calm and non-destructive. She does well with other dogs, is curious about cats, and may do fine with small animals with slow introductions. Ginger needs a patient home, ideally with a fenced yard, and someone willing to continue building her confidence. She has been polite but slightly hesitant with children. She can be adopted with Clover or separately. Ginger is gentle, loyal, and ready to bloss
We'll also keep you updated on *LEGOLASS's adoption status with email updates.
Photo of *LEGOLASS

*LEGOLASS

Mastiff

Male, 5 yrs
Upper Marlboro, MD
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
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Story
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We'll also keep you updated on MAX's adoption status with email updates.
Photo of MAX

MAX

Mastiff

Male, 10 yrs
Upper Marlboro, MD
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
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Story
Max (A565113):Max is a lovable 10-year-old male mastiff mix who embodies sweetness and charm. This gentle giant has a heart full of love and an endearing personality that shines through in every interaction. Max loves to `talk,` sharing his thoughts with cute grumbles and playful sounds that will make you smile!One of Max`s favorite things in the world is treats! He is highly treat-motivated, making training sessions a joy and an opportunity for bonding. Whether you’re teaching him new tricks or just showering him with affection, Max is always eager to please.This sweet boy is looking for a warm, caring home where he can share his enthusiasm and enjoy his golden years. If you are looking for a senior pup who is sweet and will be your best buddy Max is your guy!Please email Fosterpgcpets.co.pg.md.us to inquire about fostering him.Animal Services Division3750 Brown Station RDUpper Marlboro, MD301-780-7200
We'll also keep you updated on Lilly's adoption status with email updates.
Photo of Lilly

Lilly

Mastiff

Female, Adult
Halethorpe, MD
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with kids, Not good with dogs, Good with cats, Needs experienced adopter, House-trained,
Story
LILLY IS A VERY LOVING AND CUDDLY DOG. SHE LOVES ATTENTION AND GREETS ALL HUMANS HAPPILY. SHE THINKS SHE IS A LAP DOG. SHE NEEDS A SPACE TO RUN AND PLAY. LILLY SHOULD BE THE ONLY PET UNLESS IT IS WITH A CAT OR SMALLER DOGS. SHE DOES NOT LIKE BABIES AND TODDLERS. OLDER KIDS ARE FINE. SHE IS A GREAT WATCH DOG BUT A SCAREY CAT AT THE SAME TIME. SHE DESERVES LOTS OF LOVE AND ATTENTION AND HUMAN CONTACT. NO SEPARATION ANXIETY AND IS FINE ALONE FOR HOURS ON HER OWN. LOVES WEARING CLOTHES, SNACKS AND TREATS. VERY FOOD MOTIVATED. WANTS TO MAKE HER OWNERS HAPPY AND CAN BE A VERY GOOD GIRL.

Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Maryland.

Mastiff puppies and dogs in Maryland cities

Mastiff shelters & rescues in Maryland

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

Here are a few organizations

Shelter

Prince Georges County Animal Services Division

3750 Brown Station Rd., Upper Marlboro , MD 20772

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

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Shelter

Montgomery County Animal Services and Adoption Center

7315 Muncaster Mill Rd, Derwood , MD 20855

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

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Rescue

Pep's Pals Rescue

Brookeville , MD 20833

Pet Types: cats, dogs

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Rescue

Pitter Pat Junction, MD transport

Towson transport , MD 21204

Pet Types: dogs

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Rescue

Reach Out Rescue & Resources

P. O. Box 542, Westminster , MD 21158

Pet Types: cats, dogs

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Shelter

Humane Society of Harford County

2208 Connolly Road, Fallston , MD 21047

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

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Rescue

Lucky's Legacy Rescue

Hagerstown , MD 21740

Pet Types: cats, dogs, reptiles, small animals

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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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