Bullmastiffs and Mastiff-type dogs are the gentle giants of the dog world. Despite their imposing size — often weighing 100 to 130 pounds or more — these dogs are known for their calm, docile temperament and deep loyalty to their families. Bullmastiffs were originally bred as estate guardians in England, trained to silently track and pin intruders rather than attack, which speaks to their controlled, even-tempered nature. Today, they are beloved family companions who are happiest lounging next to their owners.
Mastiff-type dogs appear in Calgary rescues when owners underestimate the space, food costs, and veterinary expenses associated with giant breeds. A Bullmastiff can eat 4 to 8 cups of food daily, and veterinary procedures cost more due to higher anesthesia and medication doses. However, their exercise needs are surprisingly modest — a couple of moderate walks per day is usually sufficient. They are not suited to apartment living due to their size, but they are calm and quiet indoors.
All Bullmastiffs and Mastiff-type dogs listed below are from 13+ Calgary-area rescues and updated every 2 hours. Giant breeds take longer to find homes, so if you have the space and commitment, consider giving a gentle giant a second chance.
Showing 8 dogs
Dijon
3 months • Bernese Mountain Dog/Lab/Mastiff Mix
BARCS Rescue
Edith
1 year • Cane Corso/Mix
Calgary Humane Society
Honey Mustard
3 months • Bernese Mountain Dog/Lab/Mastiff Mix
BARCS Rescue
Ketchup
3 months • Bernese Mountain Dog/Lab/Mastiff Mix
BARCS Rescue
Klein
Unknown • Cane Corso
Heaven Can Wait
Mayo
3 months • Bernese Mountain Dog/Lab/Mastiff Mix
BARCS Rescue
Relish
3 months • Bernese Mountain Dog/Lab/Mastiff Mix
BARCS Rescue
Tuffy
1 year • Cane Corso/Mix
Calgary Humane Society
Bullmastiff Adoption FAQ
Are Bullmastiffs good family dogs?
Bullmastiffs are excellent family dogs when properly socialized. They are gentle, patient, and naturally protective of children. Their calm demeanour makes them reliable companions in busy households. However, due to their size, supervision is important around very young children as they can accidentally knock toddlers over. They are typically good with older children who can interact with them respectfully.
How much exercise does a Bullmastiff need?
Bullmastiffs have surprisingly low exercise needs for their size. Two moderate walks of 20 to 30 minutes each per day is usually sufficient. They enjoy short play sessions but tire quickly. Avoid intense exercise, especially in Calgary's summer heat, as they are prone to overheating. Puppies and young Bullmastiffs should have limited exercise to protect their developing joints.
How much does it cost to own a Bullmastiff?
Bullmastiffs are more expensive to own than average-sized dogs. Food costs run $100 to $200 per month. Veterinary costs are higher due to their size — larger drug doses, more anesthesia, bigger crates, and larger beds. Common health concerns include hip and elbow dysplasia, bloat, and certain cancers. Pet insurance is recommended. Despite the costs, their loyal and loving nature makes them incredibly rewarding companions.