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Mastiff puppies and dogs in Lake Forest, California

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

Adopt a Mastiff near you in Lake Forest, California

These Mastiffs are available in Lake Forest, California.
We'll also keep you updated on Moose - Courtesy Post's adoption status with email updates.
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Moose - Courtesy Post

Mastiff

Male, Adult
Lake Forest, CA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, House-trained, Spayed or Neutered,
Story
This handsome big guy is Moose, a sweet 2-year-old pup tipping the scales at 97 lbs of love! Moose has had lots of training under his belt and is fully crate trained, walks beautifully on leash, and is great with other dogs.Moose is neutered, up-to-date on vaccines, and ready to find his forever home. While he’s made great progress, Moose is still a bit timid and sensitive, so he’s looking for a calmer household where he can continue to blossom at his own pace. Because of his gentle, shy nature, he’d do best in a home with older kids who understand how to give him space when he needs it.Moose would love a family who can provide a quiet, structured environment where he can feel safe, loved, and part of the pack. If you’re looking for a loyal, kind-hearted companion with a big heart (and paws to match!), Moose may be the one for you! Located in Los Angeles, CAOctober 14, 2025, 1:34 pm

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We'll also keep you updated on Dudley-Special Needs - Adopt Me!'s adoption status with email updates.
Photo of Dudley-Special Needs - Adopt Me!

Dudley-Special Needs - Adopt Me!

Mastiff Labrador Retriever

Male, Adult
Lake Forest, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Dudley is a sweet, affectionate 2-year-old male weighing around 65 lbs. Partially blind and deaf, he doesn’t let that slow him down. He walks nicely on leash and just needs gentle guidance to avoid obstacles — if he loses track, he’ll give your leg a soft “bonk” to reorient himself.Dudley enjoys short walks, stuffed toys, and being outside. After a 20-minute stroll, he’s ready to chill for the rest of the day. He lets you know when he needs to potty and loves foraging for treats as enrichment.He’s social with other dogs (especially if they make physical contact), and he’s currently thriving in a foster home with other dogs, cats, and kids. Dudley also responds to touch cues — a double tap on his bottom means “sit.”Dudley is looking for a patient, loving home to guide him safely and show him how wonderful life can be!December 10, 2025, 5:20 pm

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Or, how about these Mastiffs in cities near Lake Forest, California

These Mastiffs are available for adoption close to Lake Forest, California.
We'll also keep you updated on Moose - Courtesy Post's adoption status with email updates.
Photo of Moose - Courtesy Post

Moose - Courtesy Post

Mastiff

Male, Adult
Lake Forest, CA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs, House-trained, Spayed or Neutered,
Story
This handsome big guy is Moose, a sweet 2-year-old pup tipping the scales at 97 lbs of love! Moose has had lots of training under his belt and is fully crate trained, walks beautifully on leash, and is great with other dogs.Moose is neutered, up-to-date on vaccines, and ready to find his forever home. While he’s made great progress, Moose is still a bit timid and sensitive, so he’s looking for a calmer household where he can continue to blossom at his own pace. Because of his gentle, shy nature, he’d do best in a home with older kids who understand how to give him space when he needs it.Moose would love a family who can provide a quiet, structured environment where he can feel safe, loved, and part of the pack. If you’re looking for a loyal, kind-hearted companion with a big heart (and paws to match!), Moose may be the one for you! Located in Los Angeles, CAOctober 14, 2025, 1:34 pm

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We'll also keep you updated on Dudley-Special Needs - Adopt Me!'s adoption status with email updates.
Photo of Dudley-Special Needs - Adopt Me!

Dudley-Special Needs - Adopt Me!

Mastiff Labrador Retriever

Male, Adult
Lake Forest, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with dogs, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
Dudley is a sweet, affectionate 2-year-old male weighing around 65 lbs. Partially blind and deaf, he doesn’t let that slow him down. He walks nicely on leash and just needs gentle guidance to avoid obstacles — if he loses track, he’ll give your leg a soft “bonk” to reorient himself.Dudley enjoys short walks, stuffed toys, and being outside. After a 20-minute stroll, he’s ready to chill for the rest of the day. He lets you know when he needs to potty and loves foraging for treats as enrichment.He’s social with other dogs (especially if they make physical contact), and he’s currently thriving in a foster home with other dogs, cats, and kids. Dudley also responds to touch cues — a double tap on his bottom means “sit.”Dudley is looking for a patient, loving home to guide him safely and show him how wonderful life can be!December 10, 2025, 5:20 pm

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We'll also keep you updated on RECON's adoption status with email updates.
Photo of RECON

RECON

Mastiff

Male, Adult
Tustin, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Spayed or Neutered,
Story
December 12, 2025, 10:40 pm

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We'll also keep you updated on GULLIVER's adoption status with email updates.
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GULLIVER

Mastiff Labrador Retriever

Male, 2 yrs 7 mos
Corona, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
Placed on rescue list due to prolonged length of stay. Dog is still available for public adoption.

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We'll also keep you updated on AUTUMN's adoption status with email updates.
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AUTUMN

Mastiff

Female, 3 yrs 3 mos
Corona, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
-
Story
11/10/25 11:06 Dog gave birth to one puppy this morning. Dog is available for adoption to a dog rescue only OR eligible to foster with puppy to a city of Corona resident.

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We'll also keep you updated on Buddy's adoption status with email updates.
Photo of Buddy

Buddy

Mastiff Rottweiler

Male, Puppy
Santa Ana, CA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Not good with dogs, Not good with cats, Shots are up-to-date,
Story
Buddy was a stray with a broken leg and malnourished. We took him in and took him to the vet to take care of his broken leg. He's very friendly with people, but is very defensive around other pets. He's very sweet and gentle with people.

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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 Lake Forest, California.

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Mastiff puppies and dogs in nearby cities

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Related breeds in Lake Forest, California

Bullmastiffs in Lake Forest, California Neapolitan Mastiffs in Lake Forest, California Saint Bernards in Lake Forest, California

Mastiff shelters & rescues in Lake Forest, California

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

Here are a few organizations closest to you:

Rescue

4.6 miles

The Little Red Dog, Inc

Lake Forest, CA 92630

Pet Types: cats, dogs, rabbits, small animals

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Shelter

13.2 miles

OC Animal Care

1630 Victory Road, Tustin, CA 92782

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

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Shelter

16.7 miles

Corona Animal Shelter

1330 Magnolia Ave, Corona, CA 92879

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

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Rescue

18.1 miles

Diamond's Friends Pet Rescue

Newport Beach, CA 92661

Pet Types: dogs

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Rescue

19.5 miles

All Paws K9 Rescue

Winchester, CA 92595

Pet Types: cats, dogs, horses

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Rescue

19.7 miles

2nd Chances Rescue Norco

1024 6th Ave., Norco, CA 92860

Pet Types: dogs

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Rescue

21.9 miles

TREAT Pet Rescue

Huntington Beach, CA 92646

Pet Types: cats, dogs

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Rescue

24.6 miles

Priceless Pets

2587 C Chino Hills Parkway, Chino Hills, CA 91709

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

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Shelter

25.7 miles

Riverside County Animal Control - Riverside Shelter

6851 Van Buren Blvd, Jurupa Valley, CA 92509

Pet Types: cats, dogs

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Shelter

27.4 miles

West End Shelter for Animals

Ontario, CA 91761

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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