Adopt

Mastiff puppies and dogs in Washington, New Jersey

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

Picture of Mastiff

Adopt a Mastiff near you in Washington, New Jersey

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 Washington, New Jersey

These Mastiffs are available for adoption close to Washington, New Jersey.
We'll also keep you updated on Arlo's adoption status with email updates.
Photo of Arlo

Arlo

Mastiff

Male, Adult
Phillipsburg, NJ
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Not good with dogs, Not good with cats, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Arlo is good with people, and he is 6 years old. He can be aggressive with other animals though. Recently he had an incident with a cat he has lived with all of his life. I work 7am to 7pm on most days, and unfortunately he is the product of a divorce. Arlo needs more room to run, more attention, and it seems that he would be better in a single animal home, however he might just need a change. He is very loving (lots of kisses/licks). This is heart breaking but unfortunately it is unsustainable and not fair to him. I would love to find him a great home where he can be the awesome dog that I truly know he is.
We'll also keep you updated on Juliana's adoption status with email updates.
Photo of Juliana

Juliana

English Mastiff Labrador Retriever

Female, Adult
Chester, NJ
Size
(when grown) X-Large 101 lbs (46 kg) or more
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. Hi! My name is Juliana! I'm about 4 years old, 78 lbs. and housetrained. I am timid though, so I  need a special home, one with another dog (or dogs), a fenced in yard and really patient people. I'm so lucky to have a great foster home but I know my  FUR ever family is out there somewhere. Julianna is spayed, microchipped, and vaccinated. Go to our website to see more pictures of her. See Juliana playing here:  https://www.facebook.com/NJSHPR/videos/703925398009073 If you are interested, submit an application at njshpetrescue.org * You must live within 90 minutes of Chester NJ to be considered as an in-person home visit is required for all adoptions. Visit this organization's web site to see any additional information available about this pet.October 20, 2025, 2:32 pm
We'll also keep you updated on Rex's adoption status with email updates.
Photo of Rex

Rex

Mastiff American Pit Bull Terrier

Male, 10 yrs 11 mos
Stroudsburg, PA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
-
We'll also keep you updated on Zeus II's adoption status with email updates.
Photo of Zeus II

Zeus II

Mastiff

Male, 6 yrs
Stroudsburg, PA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
-
We'll also keep you updated on Twix's adoption status with email updates.
Photo of Twix

Twix

Mastiff Pit Bull Terrier

Male, 3 yrs
Raritan, NJ
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Make A Difference in your Community - Adopt a Shelter Dog! Would you like to foster a Shelter Survivor? For more information, visit us at www.sheltersurvivors.com THIS IS A COURTESY POSTING – Twix is not in one of our foster homes and we have not met him, we are assisting his owners with finding him a new home. Here are fun facts his owner wants you to know: - Twix / 3yo / Male/ Neutered / 65 lbs / In great health - Mastiff/Herding mix - Up to date on vax since 8/25/25 - Will do best with experienced, active dog owners who would be able to be consistent with good daily habits to strengthen his foundational training. No other animals, no small children in the house. - Has had multiple professional training experiences, all successful. Quick improvements in training sessions. He is passionate about learning. - Housetrained and very communicative about needing the bathroom. Will whine/grumble, give paw or look at door. - He is crate trained and loves his crate. He will crate himself to take naps throughout the day and also will tuck himself to bed when the sun goes down and sleeps through the night. - Not destructive in the home at all, even when left alone. No separation anxiety. - Walks nice on leash! Big sniffer. Knows heel. - Energy level is average/medium. Will match your energy to be very active or a couch potato. Greets with excitement for just a few minutes. - Shines with his family/pack and loves physical and verbal affection. - Total silly playful goofball and sweetie pie who just wants to love. - Loves long walks (hiking and camping), swimming, tug and fetch. - Nervous when not introduced to new dogs and new people but eased with structured introduction or pack walk. 100% success rate when introduced to new people. Selectively reactive with intact males. - No cats is best. He is ok with cats if the cat leaves the dog alone. He lived 2 years with a male cat and they kept to themselves and lived peacefully. - Not socialized around kids. Unknown. - Resource guards around main meals and high value treats, but not with training treats. Very easy to train (food motivated). Does not protect empty bowl. - One bite due to mishandling by his previous owner. The dog was nervous around a stranger and the previous owner did not intro or deescalate then dropped leash. After a professional reactivity evaluation, a trainer assessed him to be safe and not serious about bites. - Previous owner got him as a puppy from a friend’s litter. To adopt Twix, please complete our online dog application at https://www.sheltersurvivors.com/application.html and return it to sheltersurvivors@live.com. Or, go to sheltersurvivors.com, click on the home page, look for "Application" at the top of the home page, and complete the application. Hit the submit button once you have completed the application in its entirety. Please do NOT leave any blank spaces, if something is not applicable type in N/A. This will expedite the adoption process. Adoption Fee: $300.00
We'll also keep you updated on Montgomery's adoption status with email updates.
Photo of Montgomery

Montgomery

Mastiff

Male, 5 yrs
Whitehall, PA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Meet Montgomery. Montgomery has traveled a long road to get here. At 4–6 years old, this 93-lb Mastiff mix carries the scars of a life that hasn’t always been kind — but his heart? Pure gold. Despite everything he’s been through, Montgomery is the definition of a gentle giant. He’s calm, loving, and wonderfully easygoing. He’s open to meeting other dogs, can be kitty-tested upon request, and would do well in a home with children. His dream life is simple: some nice walks to stretch those big legs, and a warm, cozy bed to curl up in at the end of the day. After all he’s endured, he deserves every ounce of comfort and care. If you’re ready to make room for a truly special dog, Montgomery is ready to give you all the love in return. Apply at lvpeaceablekingdom.info. Peaceable Kingdom, PA Kennel License #04131, 1049 MacArthur Rd., Whitehall, PA 18052

Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in Washington, New Jersey.

Mastiff puppies and dogs in nearby cities

Related breeds in Washington, New Jersey

Mastiff shelters & rescues in Washington, New Jersey

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

Here are a few organizations closest to you:

Rescue

17.5 miles

NJSH Pet Rescue

Chester, NJ 07930

Pet Types: cats, dogs

More an arrow icon

Shelter

19.5 miles

AWSOM

Godfrey Ridge Drive, Stroudsburg, PA 18360

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

More an arrow icon

Rescue

23 miles

Shelter Survivors

New Jersey/New York area, Raritan, NJ 08869

Pet Types: dogs

More an arrow icon

Shelter

26.2 miles

Peaceable Kingdom Shelter

1049 MacArthur Road, Whitehall, PA 18052

Pet Types: cats, dogs, rabbits, small animals

More an arrow icon

Rescue

26.8 miles

Pitter Pat Junction, PA transport

Allentown transport, PA 18101

Pet Types: dogs

More an arrow icon

Rescue

39.7 miles

Home At Last Dog Rescue

100 West Main, Lansdale, PA 19446

Pet Types: dogs

More an arrow icon

Shelter

40.2 miles

Hamilton Animal Shelter

2100 Sylvan Ave., Hamilton, NJ 08610

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

More an arrow icon

Rescue

42.1 miles

Lucky Tails Rescue - NJ transport

east windsor, NJ 08691

Pet Types: dogs

More an arrow icon

Rescue

43.8 miles

Friends With Four Paws, East Coast

Bellevile, NJ 07109

Pet Types: cats, dogs

More an arrow icon

Rescue

44.1 miles

Arcadia Animal Rescue - Central NJ Chapter

Hamilton, NJ 08620

Pet Types: cats, dogs, 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