Mastiff Adoption in Middlesex, NJ: Mastiff Puppies for Sale in Middlesex, NJ

Adopt a Mastiff near you in Middlesex, 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 Middlesex, New Jersey

These Mastiffs are available for adoption close to Middlesex, New Jersey.

Twix

Mastiff Pit Bull Terrier

Male, 3 yrs 6 mos

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

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Zeus

Mastiff Mastiff

Male, Young

Whitehouse Station, NJ

Size

(when grown) X-Large 101 lbs (46 kg) or more

Details

Good with kids, Good with dogs, Good with cats, Shots are up-to-date,

Story

Our family is relocating and will not able to keep our youngest livestock guardian dog. Zeus is about a year old. He’s a Spanish Mastiff, currently not yet neutered. He’s very friendly and has a good demeanor with people. Doesn’t act aggressive or bark much at people. He’s more interested in watching out for animals outside. He’s still young and could work out of it, but he’s not currently safe to leave alone with poultry/fowl or with sheep. He will try to play too rough with them. Plays great with our Great Dane with no overly aggressive behavior or injuries. Zeus lives outside and in our barn structures so house breaking hasn’t been attempted ever. He’s had some interaction with our cats and acts a bit nervous or scared of them.

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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.March 13, 2026, 9:33 am

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Cinnamon

Mastiff Labrador Retriever

Female, 6 mos

east windsor, NJ

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Spayed or Neutered,

Story

Get ready to spice up your life with the one and only Cinnamon! This incredible girl will captivate you with her playful spirit and heartwarming personality. Cinnamon is an affectionate and loyal pup who loves nothing more than to shower her favorite people with kisses and cuddles. She's an athlete and a curious explorer, always up for an adventure, whether it's a walk in the park or a game of fetch in your backyard. With her playful nature, she'll keep you on your toes and bring laughter into your home. Cinnamon is as smart as she is beautiful, and she loves to show off her clever tricks. She's also a social butterfly who gets along with other dogs, making her the perfect addition to any furry family. As a puppy, she's full of energy and enthusiasm, always ready to take on the world. Her friendly and funny demeanor will win you over in an instant, and you'll find yourself falling in love with her unique charm. Cinnamon is the whole package — a loyal companion, a playful partner, and a loving friend. She's eager to find her forever home and fill it with joy, love, and plenty of kisses. If you're looking for a devoted and affectionate pup, Cinnamon is the one for you. Come and meet her today, and let her spice up your life!

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Gracie

Mastiff Labrador Retriever

Male, 6 mos

east windsor, NJ

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Spayed or Neutered,

Story

Meet Gracie, a bundle of joyful energy and loyalty! This little girl will bring laughter and love into your home with her playful and affectionate nature. Gracie is an intelligent pup who is always up for an adventure, and with her athletic build, she'll be your active companion. She has a heart of gold and a funny, loving spirit that will keep you on your toes. Gracie is eager to find her forever family and will be a devoted friend to whoever adopts her. Could that be you?

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Gus

Mastiff

Male, 6 yrs 1 mo

east windsor, NJ

Size

(when grown) Large 61-100 lbs (28-45 kg)

Details

Spayed or Neutered,

Story

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Mastiff puppies and dogs in Middlesex, New Jersey

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Mastiff puppies and dogs in Middlesex, New Jersey

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Adopt a Mastiff near you in Middlesex, 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 Middlesex, New Jersey

These Mastiffs are available for adoption close to Middlesex, New Jersey.

Search for a Mastiff puppy or dog

Mastiff puppies and dogs in nearby cities

Related breeds in Middlesex, New Jersey

Mastiff shelters & rescues in Middlesex, New Jersey

Looking for a specific shelter or rescue?

Want to learn more about adopting a Mastiff puppy or dog?

Mastiff basics

Mastiff basics