Mastiff

A giant and dignified guardian breed.

The Mastiff is a massive and protective breed, known for its loyalty and calm demeanor. Though they appear intimidating, they are gentle giants who thrive in a loving family environment. Their short coat makes grooming simple, but they do require space and training due to their size.

Quick Facts

SizeLarge
Breed GroupWorking
Lifespan8–10 Years
Exercise NeedsUp to 1 hour per day
TrainabilityMastiffs are intelligent but can be stubborn. They respond best to firm, consistent, and positive training. Early socialization is key to ensuring they grow into well-mannered adults.
Grooming NeedsMedium
SheddingYes
Barking TendencyLow
TemperamentCalm, protective, and affectionate with family. They can be wary of strangers but are generally well-mannered and gentle.

Available Mastiffs

47 dogs available
Arnie, a 5 years old male Mastiff available for adoption from Heathlands Animal Sanctuary in Hertfordshire

Heathlands Animal Sanctuary

Arnie

Hertfordshire
SexMale
Age5 years
BreedMastiff

Arnie is a lovely big friendly boy of around 40kg. He loves a fuss and everyone he's met. Fine with kids, joggers, cars, bikes, loud noises, coffee shops etc. He's very easy in the home and sleeps quietly downstairs all night.He's generally fine with other dogs but seems to prefer females. He enjoys his food and treats and hasn't shown any signs of allergies or food intolerance. He can be quite strong on the lead at the start of a walk but loves his play time with toys in the paddock and soon calms down after a run. Knows all basic commands.Arnie would be best suited with older teenage children as he is a big boy and doesn't realise his size. No cats or small furries.

Atlas, a 1 year old male Mastiff available for adoption from Dogs Trust in Warwickshire

Dogs Trust

Atlas

Warwickshire
SexMale
Age1 year
BreedMastiff

Are you right for Atlas?Meet Atlas, a big handsome lad who is still just a youngster at 1 year old. He's arrived with us after being found a stray meaning that we don't know too much about his past. Since coming into our care he's been a little overwhelmed and can find new people a little scary. He's slowly finding his paws and is showing us what a silly and goofy boy he is! Atlas is looking for a home with upper secondary school aged children who can understand his worries and sensitive nature who can learn to read his body language and give him any time and space he might need. It's likely he has never been in a home before, so may need some support with all aspects of home life including things such as housetraining. We also recommend any time being left is gradually built up as he settles in. Atlas absolutely loves his toys and is never happier than when he's zooming around playing fetch! Atlas isn't comfortable around other dogs, and wears a muzzle while out and about on walks. He would benefit from access to quiet walking areas and secure fields where he can relax and enjoy nature. He must have access to his own secure garden with no dogs living either side and secure fencing.Is Atlas right for you?Atlas is a wonderful boy who just needs a bit of time and patience to blossom. He's super clever and is happy to show off a "sit" and "paw" for a treat or two. Being a big lad, he can be strong on the lead so will adopters who can physically handle him and feel confident continuing his training around loose lead walking.

Bandit, a 7 years old male Bulldog x Mastiff available for adoption from South East Dog Rescue in Kent

South East Dog Rescue

Bandit

Kent
SexMale
Age7 years
BreedBulldog x Mastiff

My name is Bandit and I am 7 year old Boxer x Bullmastiff. I found myself on death row in a pound due to being an unclaimed stray.. most likely dumped by my previous owner.I do have elbow dysplasia which is controlled well with medication.I am a big strong boy who thinks he can sit on your lap like a chihuahua! I love a bum scratch and am always perfect patient at the vets.I love to be loved and have lots of love to give my new family!!I have no experience with children and am looking for an adult only home without visiting children.I cannot live with cats or small furries!I get on well with some dogs but not all, and so will need a home as the only dog.I walk well on the lead during my walks but am very strong initially or when excited so will need a fit and strong person to walk me. I can't do marathons but a couple of ½ hour walks a day would suit me well.I am looking for a quiet home with calm adults who enjoy a brindle snuggle buddy!

Bear, a 2 years old male Mastiff available for adoption from RSPCA in Lincolnshire

RSPCA

Bear

Lincolnshire
SexMale
Age2 years
BreedMastiff

Bear Breed: Cane Corso Mastiff Age: Around 2 years old Sex: MBear Breed: Cane Corso Mastiff Age: Around 2 years old Sex: MBear Breed: Cane Corso Mastiff Age: Around 2 years old Sex: MThings to know .cls-1{fill:#fff;} I may be able to live with dogs .cls-1{fill:#fff;} I can live with older childrenThings to know .cls-1{fill:#fff;} I may be able to live with dogs .cls-1{fill:#fff;} I can live with older childrenThings to know .cls-1{fill:#fff;} I may be able to live with dogs .cls-1{fill:#fff;} I can live with older childrenThings to know .cls-1{fill:#fff;} I may be able to live with dogs .cls-1{fill:#fff;} I can live with older childrenThings to know .cls-1{fill:#fff;} I may be able to live with dogs .cls-1{fill:#fff;} I can live with older childrenPlease click the button below and read the information carefully before downloading an application.Please click the button below and read the information carefully before downloading an application.Bear came into the branch on the 14th July through no fault of their own. He is a 2 year old cane corso with boundless energy. Bear loves playing tug of war and hanging out with his fellow doggy residents. Bear has been described by kennel staff as being very good towards other dogs and has encouraged confidence with one resident by playing a game through the fences. Bear is described as large but incredibly gentle and well mannered. We are not sure whether Bear has lived with cats or children in the past. However due to his size and breed, we would prefer to rehome Bear to a dog only household with older children 14+.Bear came into the branch on the 14th July through no fault of their own. He is a 2 year old cane corso with boundless energy. Bear loves playing tug of war and hanging out with his fellow doggy residents. Bear has been described by kennel staff as being very good towards other dogs and has encouraged confidence with one resident by playing a game through the fences. Bear is described as large but incredibly gentle and well mannered. We are not sure whether Bear has lived with cats or children in the past. However due to his size and breed, we would prefer to rehome Bear to a dog only household with older children 14+.Bear came into the branch on the 14th July through no fault of their own. He is a 2 year old cane corso with boundless energy. Bear loves playing tug of war and hanging out with his fellow doggy residents. Bear has been described by kennel staff as being very good towards other dogs and has encouraged confidence with one resident by playing a game through the fences.Bear is described as large but incredibly gentle and well mannered. We are not sure whether Bear has lived with cats or children in the past. However due to his size and breed, we would prefer to rehome Bear to a dog only household with older children 14+.©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961 Privacy & Cookies Terms & Conditions Site handcrafted by©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961©2026 RSPCA Lincolnshire Mid, North East & Lincoln Branch CIO.Reg. Charity no.1212961Cookies & Privacy PolicyWe use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. However, you may visit "Settings" to provide a controlled consent.Accept AllReject AllSettingsPrivacy PolicyWe use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. However, you may visit "Settings" to provide a controlled consent.Accept AllReject AllSettingsPrivacy PolicyWe use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. However, you may visit "Settings" to provide a controlled consent.Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. Necessary Necessary Always Enabled Necessary cookies are absolutely essential for the website to function prope

Big Bruno, a 2 years old male Mastiff available for adoption from Cardiff Dogs Home in Wales

Cardiff Dogs Home

Big Bruno

Wales
SexMale
Age2 years
BreedMastiff

Bruno is a Mastiff cross, estimated to be around 17 months old, who came into our care after being abandoned as a fake stray.When Bruno first arrived, he was an extremely worried young dog who found the world overwhelming. He is still learning about the world around him and can be unsure of loud noises and unfamiliar surroundings. Through patience, training and positive experiences, he has made fantastic progress and continues to grow in confidence.Bruno is a big, powerful lad who is expected to reach around 70kg when fully grown. Our staff have worked incredibly hard building his lead manners and confidence. He has progressed beautifully, but due to his size and strength he will need a confident owner with large breed experience who can continue his training and development.Our staff and behaviour team have also worked closely with Bruno on his impulse control and resource guarding. He has responded well and continues to make encouraging progress. His future family will need to continue using positive reinforcement to help him feel safe and secure.Once Bruno trusts you, he is an affectionate boy who loves fuss, enjoys a game of tug and proudly carries his favourite toys around.Bruno is looking for an adult-only home. He may be able to live with a calm, neutered female dog of a similar size, subject to successful introductions. Any companion would need to be a good match for his play style and ongoing development.Bruno is a bright, resilient young dog who has already overcome so much. With patient, understanding owners, he has the potential to become a loyal and rewarding companion.Cardiff Dogs HomeWestpoint Industrial EstatePenarth RoadCardiffCF11 8JQWe work in partnership with:Support us by making a donation or by donating food and other items.All donations are very gratefully received.© Cardiff Dogs Home 2024 - Website designed by Cardiff Council Web Team

Bonnie, a 3 years old female Mastiff available for adoption from Greenacres Rescue in Wales

Greenacres Rescue

Bonnie

Wales
SexFemale
Age3 years
BreedMastiff

Meet Bonnie who is a beautiful 3-year-old Mastiff cross with the biggest heart, who is simply longing for a family to call her own. Sadly, her past has left her a little wary of new people, but with patience, kindness and reassurance she soon begins to trust and her sweet, affectionate nature shines through. Bonnie absolutely adores other dogs and would thrive in a home with a confident canine companion who can help her build her confidence and show her the ropes.As a large breed, Bonnie would benefit from a home with someone who has experience of bigger dogs and understands the gentle, loyal nature they have to offer. She deserves a family who will look beyond her initial nerves and give her the love, security and second chance she's been waiting for. If you're a large dog lover looking for a faithful companion, Bonnie could be the perfect addition to your family.

Brandy, a 2 years old female Rottweiler x Mastiff available for adoption from Rain Rescue in South Yorkshire

Rain Rescue

Brandy

South Yorkshire
SexFemale
Age2 years
BreedRottweiler x Mastiff

Hi, I’m Brandy!I’m a 2 year 9 month old Rottweiler x Mastiff girl looking for a loving family to call my own.If you’re looking for a dog with a big personality, then look no further! I’m a super excitable, happy-go-lucky girl who loves life and greets every day with a wagging tail and a huge smile. I can be a little giddy at times because I get so excited about making new friends and exploring the world around me.Being a Rottweiler x Mastiff, I’m a big girl with an even bigger heart. Because of my size and enthusiasm, I can be quite strong on the lead, so I’d love a home with someone who has experience with larger breeds and can help me continue working on my manners.I’ve previously lived with another dog called Bailey, who is also looking for a home, so I may be able to live with another dog pending successful introductions. Unfortunately, cats aren’t for me – I don’t really like them, so I’d need a cat-free home.I’ve also lived with children in my previous home and enjoyed being part of family life. As long as any children in my new home are comfortable around a big, bouncy, silly girl like me, we could be the perfect match!The kennel team are still getting to know me, and they’ll update my profile as they learn more about my personality, likes, and dislikes.What I really want is a family who will give me plenty of love, guidance, and fun adventures. In return, I’ll bring lots of laughter, affection, and endless companionship to your life.Could you be the forever family I’ve been waiting for? I can’t wait to meet you!My adoption fee is £350.

Bruce, a 5 months old male Mastiff available for adoption from RSPCA in Hampshire

RSPCA

Bruce

Hampshire
SexMale
Age5 months
BreedMastiff

Personality:Meet Bruce, our sweet mastiff puppy who is searching for his forever home. Bruce has found himself in our care at the young age of just five months and is just waiting to be snapped up! Bruce is a timid guy but warms up very quickly to new people but once he gets to know you, you will be greeted with a wiggle bum!. He is a big soft baby who is going to make a family incredibly happy. Bruce will thrive in a home with a family that is prepared to take on training and socialising and committed to helping Bruce settle into his new home.Behaviour:Bruce is currently in a foster home and doing very well. He sleeps well at nighttime and appears to be toilet trained. He is settling in well with another dog and would love to live with another confident dog to help show him the ropes. Bruce loves to play, have cuddles and is great fun to train. He responds very well to training and loves to please.Housing:Bruce would love to have his own garden to help build his confidence. We are looking for a 5* home for this guy as at only 5 months old he weighs 24kg so is going to be a big dog! If you are looking for a dog you can take to training classes and have fun adventures with, then Bruce could be the dog for you!Children/pets:Bruce can live with cats and dogs (pending successful dog meets here at the shelter) Bruce seems to warm quicker to female dogs but could live with a male dog if they are the right temperament. Bruce is currently in foster with a cat and takes no notice of them but adopters should be prepared to manage their environment initially. Bruce can live with all age children but he is a big bouncy boy so children should be confident around dogs.Vet history:Bruce will need to come back to the shelter when he is old enough to be castrated. He is up to date with flea, worming and vaccinations and has no on-going medical issues.

Bruno, a 3 years old male Weimaraner X Mastiff available for adoption from PawPrints To Freedom in Surrey

PawPrints To Freedom

Bruno

Surrey
SexMale
Age3 years
BreedWeimaraner X Mastiff

Bruno is a 3-year-old extra-large male Weimaraner x Mastiff, standing at an impressive 91cm tall and weighing 70+ kg.After waiting in emergency boarding kennels for 7 months Bruno found himself in what was supposed to be his forever home for the past 3 months. Everything went great for the first 2.5 months but as Bruno has had some issues with the resident dog for the past 2 weeks the family have decided to surrender him. Bruno has not worked with any professional on any of these behaviours and advice from PPTF was refused - they just want him moved asap.While he is a big soft baby at home, he is very strong on lead. He is microchipped, neutered and fully vaccinated, with no known health issues.Bruno is an extremely large, heavy and strong dog and because of this Bruno must be walked by someone with proven experience handling very strong XL breeds and who has the physical ability to keep full control at all times.Bruno has some specific conditions such as muzzling in public that his new home will need to meet which can be discussed on application. Please apply for more information.• No dogs (it is unclear how he is living with other dogs in the home)• Quiet area with low foot traffic, dogs and peopleBruno has previously suffered from separation anxiety and is currently left for around 90 minutes without. any issue, so his new home must be willing to build alone time very slowly. He can also open doors, so his new family must be extremely vigilant with home security at all times.• Toilet trained (may need a quick refresher after kennels)• Not crate trained as previously slept on the bed or in his own bed• Obsessed with his duck teddy, toys & sniffing out treatsBruno travels brilliantly in the car and is great on longer journeys.“Bruno is a big softie and a really happy boy who wags his tail a lot. He often wanders around with his duck toy in his mouth.”“He loves playing, the beach, paddling in water, cuddles and belly rubs. He is very much a one-person dog who bonds deeply.”Bruno will thrive with a calm, confident, physically strong and highly responsible owner, living in a quiet rural setting, who can provide structure, security, long peaceful walks, affection and lifelong commitment.He is huge on lead but a total baby at home — a loving, loyal companion for someone who truly understands what that means.

Bug, a 5 years old male Mastiff available for adoption from Dogs Trust in Warwickshire

Dogs Trust

Bug

Warwickshire
SexMale
Age5 years
BreedMastiff

Are you right for Bug?Our big and beautiful Bug is ready to find his forever home. This gentle giant has come into our care as a stray but has been nothing but a pleasure to care for. Bug is a friendly boy and we think he could live with lower primary aged children providing they are confident around big dogs and following a meet here at the centre. Bug can sometimes be a little clumsy and not quite realise just how big he is! Bug may need some support with settling into a home environment which may include things such as housetraining and learning how to spend time alone, so we recommend this is built up gradually. Bug has been making some doggy pals here at the centre and whilst he's a friendly lad, he doesn't have many manners. He'll need to be the only dog for now but would love some tolerant walking buddies who can teach him some social skills!Is Bug right for you?Bug loves to be out and about exploring and sniffing new places, but can be quite strong on the lead so will need adopters who can continue his ongoing training in this area. It's important his new family are confident managing a large and often excitable dog. Bud loves his toys, but they often don't last too long. He LOVES to jump into the car and will even try to jump into an open window given the chance, so would likely be a perfect adventure buddy!

Bug, a 6 years old male Mastiff available for adoption from Dogs Trust in Greater London

Dogs Trust

Bug

Greater London
SexMale
Age6 years
BreedMastiff

Are you right for Bug?Bug is looking for a home where he can enjoy a relaxed lifestyle while building a strong bond with his new family. As we have very little history about his life before arriving at the centre, his adopters should be prepared to support him with any ongoing training. Due to his gentle nature and friendly approach to people, we feel Bug could live with children of primary school age and above. He may also be considered for homes with other animals pending appropriate assessments. Bug would suit owners who appreciate a large, affectionate dog who enjoys both quiet downtime and occasional playful moments, and who are happy to help him continue learning about life in a loving home.Is Bug right for you?Bug is a gentle giant with a wonderfully sweet nature and an easy-going outlook on life. Since arriving at the centre, he has quickly settled in, getting to know his handlers and is happiest spending his days relaxing on his bed. He is currently in a foster home temporarily staying with a volunteer until we find his forever family. He is now housetrained and his favourite place to hang out is the garden. He absolutely loves attention from people, leaning in for a head rub. Bug is a polite boy, he takes treats gently, and has impressed everyone with how relaxed he is during handling. When the mood takes him, his playful side shines through as he bounces around with his toys, enjoys a game of fetch, and shows off his fun-loving personality. Bug is a calm companion and playful best friend, and we think he has so much love to offer his future family.

Showing 1-12 of 47 Mastiffs