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Mastiff puppies and dogs in Fredericksburg, Virginia

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

Picture of Mastiff

Adopt a Mastiff near you in Fredericksburg, Virginia

These Mastiffs are available in Fredericksburg, Virginia.
Photo of Saltine

Saltine

Mastiff

Female, 3 yrs 3 mos
FREDERICKSBURG, VA
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, Shots are up-to-date,
Story
Don’t let the name fool you—this Saltine is very sweet! 🥰 Saltine is a house-trained, crate-trained, dog-friendly, low-energy love bug with a constantly wagging tail and the sweetest manners. She’s extra polite and will even ask for permission before hopping onto the couch or into bed for cuddles. Saltine is a chill girl who loves being outside and going for long walks. Her idea of a perfect day includes strolling around the neighborhood, rolling in the grass, soaking up constant pets, enjoying a few treats, and enthusiastically tearing apart her toys. She’s also wonderfully curious and may occasionally try to sneak an acorn snack when you’re not looking! She’s friendly, patient, and easygoing, making her a wonderful companion for someone looking for a loving dog who enjoys both adventures and relaxing at home. Saltine is looking for a cat-free home, but she would be happy to share her life with her people and dog friends. If you’re looking for a sweet, polite, happy girl with a wagging tail and a big love for the outdoors, Saltine just might be your perfect match. https://www.shelterluv.com/matchme/adopt/FHVA/Dog
Photo of Bartholomew

Bartholomew

Labrador Retriever Mastiff

Male, 2 mos
Fredericksburg, VA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Meet Bartholomew (Bart)! 🐾 The Stats: 5 lbs of pure feisty energy! DNA says big, but Bart is proudly staying fun-sized. The Backstory: He had a rough start, but this resilient little comeback kid is ready for his forever home. Personality: Adventurous and playful—he loves toys, exploring, and climbing on everything like a tiny mountain goat. Social Life: An absolute people-lover and professional cuddle bug! He adores other dogs too, though he needs a little supervision during playtime since he doesn't know how to defend himself. Bedtime: Not a huge crate fan at first, but he settles within minutes and sleeps soundly all night. As a puppy, I am required to go to training within 90 days of my adoption with a certified trainer. ********************************************************************* Schedule a meet-and-greet by completing our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey. Join our Foster program and become a hero! Get started by completing our Foster Application on the Foster page of our website at https://www.olddominionhumanesociety.org/foster. ____________________________________________________________ ADOPT A DOG, SAVE A LIFE! Old Dominion Humane Society (ODHS) Adoption Process - Complete our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey to expedite the process and arrange a meet-and-greet. Expect a response within about a week; please check your spam folder. As we're 100% volunteer-run, your patience is appreciated! Requirements And Donations - Required Adoption Day Items: A martingale collar and a non-retractable leash (available for purchase at ODHS). - Adoption Donations: Puppies (under 1 year): $375; Adults: $275; Seniors (age-dependent): $175; Select dogs: $500. We accept cash, debit, and credit cards. - Adoption Radius: Within 350 miles of Fredericksburg, VA. A $50 out-of-state fee applies. - Breed Identification: Dogs are listed as "Mixed Breed" unless formal documentation is available. Location And Hours - Visit our adoption center at 3602 Lafayette Blvd, Fredericksburg, VA 22408 during adoption hours: Wednesday 5-7 PM; Friday 6-8 PM; Saturday 10 AM-4 PM. - We also host adoption events throughout our community. See our Upcoming Events page at https://www.olddominionhumanesociety.org/events for dates and locations. Bringing Your New Dog Home - The 3-3-3 Rule: Understand what to expect during your new dog's first three days, three weeks, and three months at https://www.rescuedogs101.com/bringing-new-dog-home-3-3-3-rule/. - Why We Don't Adopt Littermates: We don't adopt dog siblings together because of the risk of littermate syndrome which often causes serious behavioral issues: https://stories.tamu.edu/news/2023/09/28/understanding-littermate-syndrome-in-puppy-pairs/. Support ODHS Help us promote forever homes for our rescue dogs! Like "Old Dominion Humane Society" on Facebook and follow us on Instagram. #Adopt #Donate #Volunteer #Foster
Photo of Horton

Horton

Labrador Retriever Mastiff

Male, 2 mos
Fredericksburg, VA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Horton- goofy, lovable guy! Loves to jump and run around, but melts into your arms for a snuggle and loves to lick your face! Follows cues very well, always looking for direction. Perfect balance of playful and chill time! I'm a cute puppy still working on housetraining and crate training. I like to chew on everything, play, eat, and then sleep! As a puppy, I am required to go to training within 90 days of my adoption with a certified trainer. ********************************************************************* Schedule a meet-and-greet by completing our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey. Join our Foster program and become a hero! Get started by completing our Foster Application on the Foster page of our website at https://www.olddominionhumanesociety.org/foster. ____________________________________________________________ ADOPT A DOG, SAVE A LIFE! Old Dominion Humane Society (ODHS) Adoption Process - Complete our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey to expedite the process and arrange a meet-and-greet. Expect a response within about a week; please check your spam folder. As we're 100% volunteer-run, your patience is appreciated! Requirements And Donations - Required Adoption Day Items: A martingale collar and a non-retractable leash (available for purchase at ODHS). - Adoption Donations: Puppies (under 1 year): $375; Adults: $275; Seniors (age-dependent): $175; Select dogs: $500. We accept cash, debit, and credit cards. - Adoption Radius: Within 350 miles of Fredericksburg, VA. A $50 out-of-state fee applies. - Breed Identification: Dogs are listed as "Mixed Breed" unless formal documentation is available. Location And Hours - Visit our adoption center at 3602 Lafayette Blvd, Fredericksburg, VA 22408 during adoption hours: Wednesday 5-7 PM; Friday 6-8 PM; Saturday 10 AM-4 PM. - We also host adoption events throughout our community. See our Upcoming Events page at https://www.olddominionhumanesociety.org/events for dates and locations. Bringing Your New Dog Home - The 3-3-3 Rule: Understand what to expect during your new dog's first three days, three weeks, and three months at https://www.rescuedogs101.com/bringing-new-dog-home-3-3-3-rule/. - Why We Don't Adopt Littermates: We don't adopt dog siblings together because of the risk of littermate syndrome which often causes serious behavioral issues: https://stories.tamu.edu/news/2023/09/28/understanding-littermate-syndrome-in-puppy-pairs/. Support ODHS Help us promote forever homes for our rescue dogs! Like "Old Dominion Humane Society" on Facebook and follow us on Instagram. #Adopt #Donate #Volunteer #Foster
Photo of Sally

Sally

Labrador Retriever Mastiff

Female, 2 mos
Fredericksburg, VA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Meet little miss sassy Sally. She is bold and adventurous. Loves to play and wrestle. But she’s still sweet and loves attention. I'm a cute puppy still working on housetraining and crate training. I like to chew on everything, play, eat, and then sleep! As a puppy, I am required to go to training within 90 days of my adoption with a certified trainer. ********************************************************************* Schedule a meet-and-greet by completing our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey. Join our Foster program and become a hero! Get started by completing our Foster Application on the Foster page of our website at https://www.olddominionhumanesociety.org/foster. ____________________________________________________________ ADOPT A DOG, SAVE A LIFE! Old Dominion Humane Society (ODHS) Adoption Process - Complete our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey to expedite the process and arrange a meet-and-greet. Expect a response within about a week; please check your spam folder. As we're 100% volunteer-run, your patience is appreciated! Requirements And Donations - Required Adoption Day Items: A martingale collar and a non-retractable leash (available for purchase at ODHS). - Adoption Donations: Puppies (under 1 year): $375; Adults: $275; Seniors (age-dependent): $175; Select dogs: $500. We accept cash, debit, and credit cards. - Adoption Radius: Within 350 miles of Fredericksburg, VA. A $50 out-of-state fee applies. - Breed Identification: Dogs are listed as "Mixed Breed" unless formal documentation is available. Location And Hours - Visit our adoption center at 3602 Lafayette Blvd, Fredericksburg, VA 22408 during adoption hours: Wednesday 5-7 PM; Friday 6-8 PM; Saturday 10 AM-4 PM. - We also host adoption events throughout our community. See our Upcoming Events page at https://www.olddominionhumanesociety.org/events for dates and locations. Bringing Your New Dog Home - The 3-3-3 Rule: Understand what to expect during your new dog's first three days, three weeks, and three months at https://www.rescuedogs101.com/bringing-new-dog-home-3-3-3-rule/. - Why We Don't Adopt Littermates: We don't adopt dog siblings together because of the risk of littermate syndrome which often causes serious behavioral issues: https://stories.tamu.edu/news/2023/09/28/understanding-littermate-syndrome-in-puppy-pairs/. Support ODHS Help us promote forever homes for our rescue dogs! Like "Old Dominion Humane Society" on Facebook and follow us on Instagram. #Adopt #Donate #Volunteer #Foster
Photo of Mayzie

Mayzie

Labrador Retriever Mastiff

Female, 2 mos
Fredericksburg, VA
Size
(when grown) Large 61-100 lbs (28-45 kg)
Details
Good with kids, Good with dogs, Spayed or Neutered,
Story
Mayzie, sweet with a side of spunk! Loves to snuggle up close to you and will make an excellent companion! 🫶 loves to run around with kids and is a fun loving girl! I'm a cute puppy still working on housetraining and crate training. I like to chew on everything, play, eat, and then sleep! As a puppy, I am required to go to training within 90 days of my adoption with a certified trainer. ********************************************************************* Schedule a meet-and-greet by completing our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey. Join our Foster program and become a hero! Get started by completing our Foster Application on the Foster page of our website at https://www.olddominionhumanesociety.org/foster. ____________________________________________________________ ADOPT A DOG, SAVE A LIFE! Old Dominion Humane Society (ODHS) Adoption Process - Complete our Adoption Survey on the Adopt page of our website at https://www.olddominionhumanesociety.org/adoption-survey to expedite the process and arrange a meet-and-greet. Expect a response within about a week; please check your spam folder. As we're 100% volunteer-run, your patience is appreciated! Requirements And Donations - Required Adoption Day Items: A martingale collar and a non-retractable leash (available for purchase at ODHS). - Adoption Donations: Puppies (under 1 year): $375; Adults: $275; Seniors (age-dependent): $175; Select dogs: $500. We accept cash, debit, and credit cards. - Adoption Radius: Within 350 miles of Fredericksburg, VA. A $50 out-of-state fee applies. - Breed Identification: Dogs are listed as "Mixed Breed" unless formal documentation is available. Location And Hours - Visit our adoption center at 3602 Lafayette Blvd, Fredericksburg, VA 22408 during adoption hours: Wednesday 5-7 PM; Friday 6-8 PM; Saturday 10 AM-4 PM. - We also host adoption events throughout our community. See our Upcoming Events page at https://www.olddominionhumanesociety.org/events for dates and locations. Bringing Your New Dog Home - The 3-3-3 Rule: Understand what to expect during your new dog's first three days, three weeks, and three months at https://www.rescuedogs101.com/bringing-new-dog-home-3-3-3-rule/. - Why We Don't Adopt Littermates: We don't adopt dog siblings together because of the risk of littermate syndrome which often causes serious behavioral issues: https://stories.tamu.edu/news/2023/09/28/understanding-littermate-syndrome-in-puppy-pairs/. Support ODHS Help us promote forever homes for our rescue dogs! Like "Old Dominion Humane Society" on Facebook and follow us on Instagram. #Adopt #Donate #Volunteer #Foster

Or, how about these Mastiffs in cities near Fredericksburg, Virginia

These Mastiffs are available for adoption close to Fredericksburg, Virginia.
Photo of Saltine

Saltine

Mastiff

Female, 3 yrs 3 mos
FREDERICKSBURG, VA
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, Shots are up-to-date,
Story
Don’t let the name fool you—this Saltine is very sweet! 🥰 Saltine is a house-trained, crate-trained, dog-friendly, low-energy love bug with a constantly wagging tail and the sweetest manners. She’s extra polite and will even ask for permission before hopping onto the couch or into bed for cuddles. Saltine is a chill girl who loves being outside and going for long walks. Her idea of a perfect day includes strolling around the neighborhood, rolling in the grass, soaking up constant pets, enjoying a few treats, and enthusiastically tearing apart her toys. She’s also wonderfully curious and may occasionally try to sneak an acorn snack when you’re not looking! She’s friendly, patient, and easygoing, making her a wonderful companion for someone looking for a loving dog who enjoys both adventures and relaxing at home. Saltine is looking for a cat-free home, but she would be happy to share her life with her people and dog friends. If you’re looking for a sweet, polite, happy girl with a wagging tail and a big love for the outdoors, Saltine just might be your perfect match. https://www.shelterluv.com/matchme/adopt/FHVA/Dog
Photo of Azula

Azula

Mastiff

Female, Adult
Ruther Glen, VA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Needs experienced adopter, House-trained, Spayed or Neutered, Shots are up-to-date,
Story
She's spayed and has such a sweet personality. Azula is very bright and food motivated, which makes training not just easy but fun. She's also great on walks considering her size, and would do well with a family who can give her the attention she deserves. If you think she might be a good fit for your home, feel free to reach out!
Photo of Gemma *Courtesy Listing*

Gemma *Courtesy Listing*

English Mastiff

Female, Adult
Stafford, VA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Good with cats, House-trained, Spayed or Neutered,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Meet Gemma - 4 year old English Mastiff. The Professional Couch Potato! If you're looking for a laid-back, lovable, 100+ pound lap dog, Gemma is your girl Gemma is the definition of chill. Her favorite hobbies include laying around, soaking up attention from her people and going for car rides with the windows down. She can be a little shy when you first meet her, but give her a minute and she warms right up -- and when she bonds, she bonds HARD! You'll have a shadow for life! She's easy to care for and does great for nail trims at home or at the groomer. Gemma was raised around kids, cats, and other foster dogs, so she's seen it all and takes it all in stride. Truly, Gemma would be great in just about any home that has room for one more big, sweet, snuggly couch cushion. Could Gemma be your new co-pilot and cuddle buddy?Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. ​Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845  October 17, 2026, 11:00 pm
Photo of Norma

Norma

Mastiff

Female, Young
Stafford, VA
Size
(when grown) -
Details
House-trained, Spayed or Neutered,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Meet Norma - The Sweetheart With a Good Heart   If Norma were a person, everyone would say she has a beautiful, good heart — and they would be right.   Norma is a quiet, laid-back lady who would make the perfect couch potato or lap dog. Her ideal day? A cozy spot on the couch, a soft place to snooze, and her favorite people nearby. She's a true gem out and about: Car rides: Rides like a pro Vet visits: Well-behaved and polite Meeting people: Great with new friends Leash walks: Walks fairly well, just needs a little help with pulling Smart girl: Learned the dog door on her own, always potties outside, figured out how to go up and down steps, and knows "sit" — especially when treats are involved! She’s a good eater and very food motivated, so training is fun. Norma can be guarded when meeting other dogs, so she’ll do best with slow introductions and a patient family who lets her go at her own pace.   Above all else, Norma is just very sweet. She’s gentle, easygoing, and full of quiet love. If you’re looking for a calm companion to share your couch, your car rides, and your heart — Norma is ready. Could Norma be your new best friend? Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. ​Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845  October 17, 2026, 11:00 pm
Photo of Gamora

Gamora

Mastiff

Female, Puppy
Stafford, VA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Shots are up-to-date,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Please take the time to research the breed before considering fostering/adoption. Because of their immense size, strength, and strong guardian instincts, they are generally not recommended for first-time or novice owners. They require experienced handling, early socialization, and ongoing training throughout their lives. Meet Gamora! Personality: Friendly, funny, all puppy. Favorite Activities: Playing with dogs, playing fetch, going for walks. Medical Issues: None. What would be the best kind of home: An active home that will help keep her well socialized. Need to understand puppies and keep up with training. Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. ​Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845  October 17, 2026, 11:00 pm
Photo of Cosmo

Cosmo

Mastiff

Female, Puppy
Stafford, VA
Size
(when grown) X-Large 101 lbs (46 kg) or more
Details
Good with kids, Good with dogs, Shots are up-to-date,
Story
You can fill out an adoption application online on our official website. Fill out an Adoption Application Please take the time to research the breed before considering fostering/adoption. Because of their immense size, strength, and strong guardian instincts, they are generally not recommended for first-time or novice owners. They require experienced handling, early socialization, and ongoing training throughout their lives. Meet Cosmo...an Independent Spirit, Born Guardian Personality: Cosmo is a spirited, adventurous, intelligent Caucasian Shepherd puppy with a big personality and natural guardian instincts. She absolutely loves having an older sister and brother! She has already learned so much from watching them, including manners and how to look after and protect the herd. She is observant, confident, curious, and always ready for her next adventure. This is a working guardian breed, and her protective instincts are already beginning to develop. She needs a family who understands that these traits are part of who she is and is prepared to guide them through consistent training, structure, and responsible socialization. Cosmo is also very independent and already shows the self-assured nature of her breed. She likes to explore, observe, and figure things out for herself. She isn't just looking for someone to entertain her—she has a mind of her own and natural instincts that will need to be guided by someone who understands guardian breeds. Her independence is part of what makes her special, but it also means she'll need a patient, confident owner who can provide consistent boundaries without expecting a people-pleasing dog. Favorite Activities: Running, exploring, playing, and going on wild adventures ALL DAY LONG! Cosmo loves having room to roam, following the animals, observing her surroundings, and learning from the older dogs. She enjoys being involved in everything happening around the homestead and is happiest when she has space to explore and a job to do. She is an energetic puppy who needs plenty of room, stimulation, and appropriate outlets for her natural instincts. A small yard or city lifestyle would not be a good fit for her. Medical Issues: No known medical issues reported at this time. What would be the best kind of home: Cosmo needs an experienced, committed home that understands and respects the Caucasian Shepherd breed. A rural property, farm, or homestead with substantial, secure fencing and plenty of room to roam would be ideal. She is accustomed to being around animals and developing her natural livestock guardian instincts, so a home that understands working guardian dogs would be best. She would benefit from having confident, well-mannered canine companions who can help show her the ropes, although any resident dogs must be a good match for her as she matures. Her new family must be prepared to provide consistent boundaries, structured training, early and ongoing socialization, and responsible management of her developing protective instincts. Food is a serious business for Cosmo! She has already shown resource-guarding tendencies, so her adopters must understand resource guarding and be willing to manage it safely and work on it through appropriate, positive training. She needs careful management around food and other valuable resources, not punishment or confrontational attempts to take things away. Cosmo is adorable, playful, and full of adventure, but she is also growing into a powerful guardian breed with strong instincts. She is not a fit for an apartment, a small city yard, or a home unfamiliar with large livestock guardian breeds. She needs space, knowledgeable handling, and a family willing to help her grow into a confident, stable, well-managed adult dog.Click here to watch a video of Cosmo.Visit this organization's web site to see any additional information available about this pet. Application Fees, Adoption Donations and Rescue Policy: Please know that 100% of our fees and donations pay for the costs of rescuing dogs. These include but are not limited to pull fees from shelters, veterinary examinations, vaccinations, medications and care, microchips, neuter/spay surgeries, heartworm treatments, behavior evaluations, and foster care, as needed. Important notes before applying. Approved adopters must have their primary residence in one of the following states: Delaware, Maryland, New Jersey, Ohio, Pennsylvania, West Virginia, Virginia, and parts of North Carolina and Kentucky. You must be at least 21 years of age to apply and legally sign our contract for adoption. Applications must be completed by the homeowner.  We do not adopt giant breed dogs to renters. If you are renting, and you are applying to adopt a dog that is not a giant breed, permission to adopt an animal must be obtained from the landlord or property owner. We do not adopt giant breed dogs to homes with children under 6 years of age. Homes with children should have a fenced yard. Applications will be denied if anyone residing in the household has a record indicating drug/alcohol abuse, theft, or violence. Pets currently in the applicant's home must have a history of appropriate veterinary care. Homes with intact dogs will not be approved for adoption.  Proof of any of the following exceptions is required: The intact dog is a working member of a law enforcement, or search and rescue/recovery team. The intact dog is registered under the auspices of the American Kennel Club and is actively being shown. A veterinarian has determined the sterilization procedure would harm the intact dog.  We believe in Force Free Training Methods and do not approve of methods or devices using pain or force to control the dog, or to deter undesirable behavior.  Homes with highly varnished steps must have carpeting, securely fixed stair treads, or a non-skid surface. **We encourage you to remediate potential safety issues while your application is under review, prior to the home visit. ​Any inside steps to which the dog(s) have access, must have carpeting, securely fixed stair treads, or a non-skid surface. Homes with highly varnished floors must have non-slip area rugs or mats wherever your animal walks or rests frequently.  **Puppy Adoption Policy** To ensure proper house training and socialization, puppies will only be adopted to homes where an adult will not be away more than an hour per day, per month of age of the puppy, up to 6 months. Certain large-breed dogs should not be sterilized prior to 12 - 18 months of age.  If you adopt an intact puppy, you will sign an adoption contract agreeing to have the dog sterilized at your expense at the time your veterinarian recommends. Proof of sterilization must be provided to Mastiffs To Mutts Rescue as soon as the procedure is completed.  If the puppy is not sterilized as required, Mastiffs To Mutts Rescue reserves the right to claim legal ownership of the dog.  For additional information please review our FAQs or contact mastiffstomutts@gmail.com **Mastiffs To Mutts Rescue reserves the right to approve or deny any adoption that occurs through this organization without disclosure.  We reserve the right to make exceptions for special circumstances. **PA Kennel License: 05845  October 17, 2026, 11:00 pm

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Mastiff shelters & rescues in Fredericksburg, Virginia

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

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Rescue

6.3 miles

Furever Home Animal Rescue

FREDERICKSBURG, VA 22401

Pet Types: cats, dogs

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Rescue

17.8 miles

Mastiffs to Mutts VA

Stafford, VA 22556

Pet Types: dogs

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Shelter

32.5 miles

Prince William County Animal Services Center

14807 Bristow Rd, Manassas, VA 20112

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

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Shelter

38.4 miles

Henrico County Police Animal Shelter

10421 Woodman Rd, Glen Allen, VA 23060

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

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Shelter

43.5 miles

Richmond Animal Care & Control

1600 Chamberlayne Avenue, Richmond, VA 23222

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

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Shelter

48.3 miles

Middleburg Humane Foundation

5000 Cunningham Farm Drive, Marshall, VA 20115

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

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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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