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Mastiff puppies and dogs in St Augustine, Florida

Looking for a Mastiff puppy or dog in St Augustine, Florida? 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 St Augustine, Florida Other pups in St Augustine, Florida Search for a Mastiff puppy or dog near you Browse Mastiff puppies and dogs in nearby cities Browse related breeds in St Augustine, Florida Mastiff shelters and rescues in St Augustine, Florida Learn more about adopting a Mastiff puppy or dog

Adopt a Mastiff near you in St Augustine, Florida

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 St Augustine, Florida

These Mastiffs are available for adoption close to St Augustine, Florida.
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Felix

Mastiff Rottweiler

Male, 3 yrs 4 mos
Ponte Vedra, FL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
Meet Felix! A thoughtful, toy-loving pup with brains and personality! This handsome boy enjoys puzzle feeders, wobble toys, rope toys, and soft plushies. He loves to learn and would do great with someone who enjoys training and enrichment activities. Felix prefers to be the center of attention as the only pet in the home and would do best with a yard. He may need a little extra time to feel comfortable around new people, especially men, but once he bonds with you, he’s a loyal companion who enjoys soaking up affection! Do you think Felix could be your perfect match? Fill out our adoption application to schedule a meet and greet today! -> https://k9sforwarriors.tfaforms.net/17

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Breezy

Mastiff

Male, Adult
Jacksonville, FL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Shots are up-to-date,
Story
This is breezy! I love this dog so much he’s so amazing and full of energy, unfortunately cannot keep him any longer because of housing issue and working to much. I just want to find someone that will be able to give him the time and attention he deserves. He is a great dog with a lot of goofball energy. I would prefer to find someone that is willing to foster him for an extended period of time until I am able to get him back. Unless that person/ family truly loves him to the point where they cannot get rid of him. Then sticking with that family would be easy decision for me to make because it’s very hard for me to even make this one I just want him to have a great life. And it breaks my heart to have to find him a new home. I’d very much prefer also if the person who chooses to foster/ adopt him is okay with keeping in contact and okay with visiting occasionally that would be greatly appreciated as this is not an easy thing for me to deal with. I will pay for all his food

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Bozco 28615

Mastiff Mixed Breed (Large)

Male, 8 mos
Middleburg, FL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with cats, Spayed or Neutered,
Story
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Photo of Roscoe

Roscoe

Presa Canario Mastiff

Male, 2 yrs 9 mos
Ponte Vedra, FL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with dogs, Spayed or Neutered, Shots are up-to-date,
Story
Meet Roscoe! This big, sensitive guy is truly just a gentle soul who thrives in a calm and quiet environment. He can feel anxious in busy places and would do best in an adult-only home where he can continue building his confidence. Roscoe may take a little time to warm up, but once he does, his sweet and affectionate personality really shines. He’s obsessed with toys and loves a good game of fetch, and he’s worked really hard on managing his excitement during playtime. With patience, love, and plenty of belly rubs, Roscoe will be a loyal and loving companion. Roscoe is familiar with his basics and would love to continue learning with you today! Apply to adopt today! -> https://k9sforwarriors.tfaforms.net/17

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These pups are in St Augustine, Florida too!

Below are our newest added Mastiffs available for adoption in St Augustine, Florida. To see more adoptable Mastiffs in St Augustine, Florida, use the search tool below to enter specific criteria!
Photo of Meryl Streep

Meryl Streep

St. Bernard

Female, Adult
St. Augustine, FL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Not good with cats, House-trained, Spayed or Neutered,
Story
The legendary, the iconic , Meryl Streep is on her way back to boarding and sadly in need of a new foster home Her current foster raves and raves about Meryl and what a good, easy girl she is but life happens and has to take a break from fostering for a while. Meryl is dog and kid friendly, but no cats please! She has a special love for small dogs which is just the most adorable thing to witness. She is crate and house trained, so much so that she puts herself to bed in her crate every night She is great in the car and game for any adventure, she goes to weekly trivia with foster mom and has become a fav local patron! When we say that Meryl is so easy, we really and truly mean it. She gets the zooms with her doggy friends but is otherwise content to do her best potato reenactment on the couch or lounge in her bed. She is 6-7 years old and weighs in at 65-70 pounds, but she’s a gentle giant with that much more love to give. If you are interested in fostering we can promise that she’d be the perfect first timer dog, or if you think Meryl might be your forever kind of dog, don’t hesitate to reach out! I mean, how many times are you going to be able to say that Meryl Streep is at your house!?! May 10, 2026, 1:59 pm

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Photo of Diesel (fka Magnum)

Diesel (fka Magnum)

Boxer Bullmastiff

Male, 5 yrs
St Augustine, FL
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Not good with kids, Spayed or Neutered, Shots are up-to-date,
Story
Interested in adopting this pet? Text 386-983-2337 or email safepets.neflorida@gmail.com

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Search for a Mastiff puppy or dog

Use the search tool below to browse adoptable Mastiff puppies and adults Mastiff in St Augustine, Florida.

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Mastiff puppies and dogs in nearby cities

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Related breeds in St Augustine, Florida

Bullmastiffs in St Augustine, Florida Neapolitan Mastiffs in St Augustine, Florida Saint Bernards in St Augustine, Florida

Mastiff shelters & rescues in St Augustine, Florida

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

Here are a few organizations closest to you:

Rescue

20.8 miles

K9s for Warriors: Ponte Vedra, FL

70 Warrior way, Ponte Vedra, FL 32256

Pet Types: dogs

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Shelter

33.6 miles

Safe Animal Shelter

2913 County Road 220, Middleburg, FL 32068

Pet Types: cats, 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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