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Mastiff puppies and dogs in Sycamore, Illinois

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

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Adopt a Mastiff near you in Sycamore, Illinois

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 Sycamore, Illinois

These Mastiffs are available for adoption close to Sycamore, Illinois.
We'll also keep you updated on Tara's adoption status with email updates.
Photo of Tara

Tara

Mastiff German Shepherd Dog

Female, 2 mos
Marengo, IL
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Good with cats, Spayed or Neutered,
Story
Sweet girl looking for her furever home
We'll also keep you updated on Shy's adoption status with email updates.
Photo of Shy

Shy

Mastiff Labrador Retriever

Female, Young
Huntley, IL
Size
(when grown) Med. 26-60 lbs (12-27 kg)
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
I am 53 lbs, and I am looking for my forever home. Adoption Donation: $450 Shy is a beautiful girl with a stunning brindle coat and a gentle, sensitive soul. True to her name, she can be a little shy at first and may need a minute to warm up to new people. But once she feels safe, her sweet personality shines through. Shy loves affection and will happily lean into you for pets once she trusts you. She has such a tender heart and just wants to be close to someone who cares about her. She came to us when her owner sadly became homeless, and the change has been scary for her. Shy is simply looking for a safe, loving home again — a place where she can relax, feel secure, and be someone’s beloved companion. With a little patience and kindness, Shy will reward you with quiet loyalty and lots of love. All dogs are microchipped, neutered, current on all vaccines, heartworm tested (if age appropriate), and up-to-date on preventatives at the time of adoption. All household members and any dogs from the household need to be present to be able to adopt. A photo ID will be required at the time of adoption. Appointments are recommended. All applications are considered general. Specific animals are NOT put on hold for adoption. When you visit, our adoption counselors will be able to make suggestions based on the type of pet you are looking for and help you find the best fit for your family. Animal House Shelter cannot guarantee the breeds of the adoptable animals. The animals are posted on the website as the breed or breed mix based on their physical characteristics they most resemble. We also cannot guarantee the ages of our adoptable animals or how large puppies will be when fully grown. We look forward to seeing you soon! Link to the Adoption Application:  https://www.animalhouseshelter.com/adopt/adoption-application/ Animal House Shelter 13005 Ernesti Road Huntley, IL 60142 847-961-5541 phone 847-961-5537 fax Open: Sunday-Friday from 11 AM to 7 PM Saturday from 9 AM to 7 PM Connect With Us: Like Us On Facebook ! Watch Us On YouTube ! Follow Us On Twitter ! Adoption Application: https://www.animalhouseshelter.com/adopt/adoption-application/ Adopt a Pet: https://www.animalhouseshelter.com/adopt/ Directions to Shelter: https://www.animalhouseshelter.com/visit/ Adoptable Dogs: https://www.animalhouseshelter.com/dogs/ Adoptable Cats: https://www.animalhouseshelter.com/cats/March 13, 2026, 6:49 pm
We'll also keep you updated on Brigid's adoption status with email updates.
Photo of Brigid

Brigid

Mastiff

Female, 2 yrs 7 mos
Oswego, IL
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
Hi, I’m Brigid and I’m new to the rescue. I am currently decompressing and getting used to my foster family. Check back as my foster family learns more about me! Dog’s Name:  Brigid Location:  Mundelein, IL Date of Birth: 09/04/2023 Gender:  Female Breed: Mastiff Color: Brindle Dog's Weight: Until the profile is removed from the public’s view, this dog is considered available for adoption. To apply to adopt from Just Giants Rescue fill out an online. All approved applications are good for 12 months. Meet and greets can be scheduled with approved adopters. All dogs adopted from Just Giants Rescue are up to date on vaccines (Rabies, DHPP, Bordetella), microchipped, and spayed or neutered. Some exceptions may apply. All adoption fees are non-refundable; Just Giants is a NFP 501(c)3 organization. Meet and greets can be scheduled with approved adopters. Transportation from the foster home to the adopter is the responsibility of the adopter to coordinate. Just Giants does not adopt outside of the continental US. To apply to adopt from Just Giants Rescue, you can visit https://justgiants.org/adopt/ to fill out an application. All dogs adopted from Just Giants Rescue are up to date on shots, microchipped, and spayed or neutered. Some exceptions may apply. For more information about Just Giants or the dogs we rescue, please visit justgiants.org. All puppies will be adopted with age-appropriate vaccines and a spay/neuter contract. Adoption Fees $750 - 12 months or younger; $150 snip it ticket  $600 - 1 to 3 years old $500 - 4 to 6 years old $300 - 7+ years old; includes senior blood panel ##2676531##
We'll also keep you updated on Marvin's adoption status with email updates.
Photo of Marvin

Marvin

English Mastiff

Male, 1 yr 6 mos
Oswego, IL
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
-
Story
Hi, I’m Marvin and I'm ready to find my forever home. Dog’s Name: Marvin Location: Bourbonnais, IL Date of Birth: 10/11/2024 Gender: Male Breed: English Mastiff Mix Color: Fawn Dog's Weight: 80 Gets along with: Dogs?: Continuing with slow introduction, but appears to be excited to see the resident dogs Cats?: The resident cat will enter Marvin's area to rest.  Marvin will sniff the cat and walk away.    Kids?: Hasn't been introduced to children yet Training: Leash trained: Walks loose on leash Potty trained: Indicates a need to potty and doesn’t have indoor accidents Car:  Rides Well in car Crate/Kennel: Working on crate training.  He's anxious at night and it takes him a bit to settle.  Once settled, he's fine in the crate. Meet Marvin Marvin is settling in beautifully and showing more of his sweet, loving personality every day. He enjoys being close to his person and thrives on connection, making him a loyal companion who just wants to be part of your world. He walks well on a leash and has been calm and non-reactive to people passing by, even those jogging. In fact, Marvin enjoys picking up the pace and could make a great running partner! He also rides wonderfully in the car and recently charmed everyone at the vet with his friendly, easygoing nature. Marvin is cat friendly and showing promising signs with other dogs. He has been able to calmly observe and interact through gates and is improving with exposure, though slow, structured introductions will be important as he continues to learn appropriate behaviors. He is also still working through some mounting behaviors, which will benefit from continued training and guidance. Children seem new to Marvin, and while he is not aggressive, he can be unsure. He tends to observe and assess rather than react, especially outside of confined spaces. Because of this, he may do best in a home with older children or one that can help build his confidence at a comfortable pace. Marvin loves to play fetch and is beginning to engage with toys like ropes. While he doesn’t yet have formal obedience training, he is already learning commands like sit, lay, and down, and is picking things up quickly. With consistency and structure, he has all the potential to become a very well-mannered companion. Due to his size and strength, Marvin would do best with an experienced giant breed owner who can provide ongoing training, structure, and guidance. He may do well with other pets and older children with proper introductions, and while a fenced yard is not required, regular exercise and continued training are essential. Marvin is a loving, eager-to-learn dog with so much potential. With the right home, patience, and commitment, he will grow into an incredible, loyal companion. Until the profile is removed from the public’s view, this dog is considered available for adoption. To apply to adopt from Just Giants Rescue fill out an online. All approved applications are good for 12 months. All dogs adopted from Just Giants Rescue are up to date on vaccines (Rabies, DHPP, Bordetella), microchipped, and spayed or neutered. Some exceptions may apply. All adoption fees are non-refundable; Just Giants is a NFP 501(c)3 organization. Transportation from the foster home to the adopter is the responsibility of the adopter to coordinate. Just Giants does not adopt outside of the continental US. To apply to adopt from Just Giants Rescue, you can visit https://justgiants.org/adopt/ to fill out an application. All dogs adopted from Just Giants Rescue are up to date on shots, microchipped, and spayed or neutered. Some exceptions may apply. For more information about Just Giants or the dogs we rescue, please visit justgiants.org. All puppies will be adopted with age-appropriate vaccines and a spay/neuter contract. Adoption Fees $750 - 12 months or younger; $150 snip it ticket  $600 - 1 to 3 years old $500 - 4 to 6 years old $300 - 7+ years old; includes senior blood panel ##2707401##
We'll also keep you updated on Sam's adoption status with email updates.
Photo of Sam

Sam

English Mastiff

Male, 1 yr
Oswego, IL
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Spayed or Neutered, Shots are up-to-date,
Story
Hi, I’m Sam.   I’m not quite ready to be adopted, but you can come back here occasionally to check my progress and find out when to submit an application. Dog’s Name: Sam Location: Villa Park, Il Date of Birth: 04/18/2025 Gender: Male Breed: English Mastiff Color: Fawn Dog's Weight: Until the profile is removed from the public’s view, this dog is considered available for adoption. To apply to adopt from Just Giants Rescue fill out an online. All approved applications are good for 12 months. All dogs adopted from Just Giants Rescue are up to date on vaccines (Rabies, DHPP, Bordetella), microchipped, and spayed or neutered. Some exceptions may apply. All adoption fees are non-refundable; Just Giants is a NFP 501(c)3 organization. Transportation from the foster home to the adopter is the responsibility of the adopter to coordinate. Just Giants does not adopt outside of the continental US. To apply to adopt from Just Giants Rescue, you can visit https://justgiants.org/adopt/ to fill out an application. All dogs adopted from Just Giants Rescue are up to date on shots, microchipped, and spayed or neutered. Some exceptions may apply. For more information about Just Giants or the dogs we rescue, please visit justgiants.org. All puppies will be adopted with age-appropriate vaccines and a spay/neuter contract. Adoption Fees $750 - 12 months or younger; $150 snip it ticket  $600 - 1 to 3 years old $500 - 4 to 6 years old $300 - 7+ years old; includes senior blood panel ##2713355##
We'll also keep you updated on Amelia's adoption status with email updates.
Photo of Amelia

Amelia

English Mastiff

Female, 3 yrs 1 mo
Oswego, IL
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with dogs,
Story
Hi, I’m Amelia and I’m ready to find my forever home. Dog’s Name: Amelia Location: Wood River, IL Date of Birth: 03/11/2023 Gender: Female Breed: English Mastiff Color: Fawn Dog's Weight: 92 Gets along with: Dogs?: All Dogs  Cats?:  Unknown Kids?: All Kids Training: Leash trained: Good on leash, but a little clumsy.  May trip you or herself Crate/Kennel:  Goes into crate/kennel on command Potty trained: Indicates a need to potty and doesn’t have indoor accidents Car:  Rides Well in car Meet Amelia Amelia is truly the sweetest girl, and now that she’s fully recovered from pneumonia, her personality is shining brighter than ever! This goofy, playful, and delightfully silly pup loves to ham it up and keep everyone smiling. Whether she’s playing with other dogs or enjoying time with her people, Amelia brings joyful energy wherever she goes. She may be a bit clumsy—think baby giraffe learning the ropes—so don’t be surprised if she accidentally knocks a thing or two over, but it only adds to her charm! Amelia is incredibly loving and adores cuddles—she’s as soft as a bunny and happiest when snuggled up close. She’s a smart girl who learns quickly with consistency and positive guidance. She loves everyone she meets, though she may get a little nervous and barky when new people enter her home. Give her a few minutes, some gentle reassurance, and a couple of treats, and she’ll be your new best friend. Amelia would thrive in a home with another playful dog or regular opportunities for playdates. While a fenced yard is recommended, it’s not required. She’s easygoing and on the smaller side for a giant breed, making her a great candidate for a first-time giant dog owner. She’s comfortable being crated or spending time in her own space as long as she has something to keep her busy—but her favorite place is right by your side. Amelia has a medium energy level and would benefit from continued obedience training and learning some manners (especially when it comes to sneaky snack stealing!). If you’re looking for a sweet, silly, affectionate companion who will keep you laughing and shower you with love, Amelia might just be your perfect match Until the profile is removed from the public’s view, this dog is considered available for adoption. To apply to adopt from Just Giants Rescue fill out an online. All approved applications are good for 12 months. Meet and greets can be scheduled with approved adopters. All dogs adopted from Just Giants Rescue are up to date on vaccines (Rabies, DHPP, Bordetella), microchipped, and spayed or neutered. Some exceptions may apply. All adoption fees are non-refundable; Just Giants is a NFP 501(c)3 organization. Meet and greets can be scheduled with approved adopters. Transportation from the foster home to the adopter is the responsibility of the adopter to coordinate. Just Giants does not adopt outside of the continental US. To apply to adopt from Just Giants Rescue, you can visit https://justgiants.org/adopt/ to fill out an application. All dogs adopted from Just Giants Rescue are up to date on shots, microchipped, and spayed or neutered. Some exceptions may apply. For more information about Just Giants or the dogs we rescue, please visit justgiants.org. All puppies will be adopted with age-appropriate vaccines and a spay/neuter contract. Adoption Fees $750 - 12 months or younger; $150 snip it ticket  $600 - 1 to 3 years old $500 - 4 to 6 years old $300 - 7+ years old; includes senior blood panel ##2680638##

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Related breeds in Sycamore, Illinois

Mastiff shelters & rescues in Sycamore, Illinois

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

Here are a few organizations closest to you:

Rescue

16.2 miles

Ricky's Rascals

101 N State St, Marengo, IL 60152

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

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Shelter

18 miles

Animal House Shelter, Inc

13005 Ernesti Rd, Huntley, IL 60142

Pet Types: cats, dogs

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Rescue

29.8 miles

Just Giant Rescue Inc - Illinois Chapter

PO Box 358, Oswego, IL 60543

Pet Types: dogs

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Rescue

30.7 miles

Redemption Road Rescue Rehab Inc.

Island Lake, IL 60042

Pet Types: cats, dogs

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Rescue

31 miles

Barrington Area Animal Rescue & Kennels NFP (BAARK Dog Rescue)

Barrington Hills, IL 60010

Pet Types: cats, dogs

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Rescue

31.6 miles

Angel Dog Alliance

Naperville, IL 60540

Pet Types: dogs

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Rescue

31.9 miles

Find A Home Pet Rescue, Inc

Naperville, IL 60564

Pet Types: cats, dogs

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Rescue

39.8 miles

Bombshell Bullies Pit Bull Rescue

P.O. Box 5122, Vernon Hills, IL 60061

Pet Types: dogs

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Rescue

40 miles

God's Dogs Rescue of TX for IL Transport Stop

Rosemont, IL 60018

Pet Types: dogs

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Rescue

41.8 miles

Focus on Cumberland County Animal Safety-IL Transport Stop

Chicago, IL 60176

Pet Types: cats, dogs

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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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