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BreedBrief®
Average Height:26"
Average Weight:120 lbs.
Energy Level:
Exercise Requirements:
Playfulness:
Affection Level:
Friendliness w/Other Dogs:
Friendliness w/Other Pets:
Friendliness w/Strangers:
Ease of Training:
Watchdog Ability:
Protection Ability:
Grooming Requirements:
Cold Tolerance:
Heat Tolerance:
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Bullmastiff
 
Overview Character Care Training Health Resources

Bullmastiff Overview

The Bullmastiff came from the blueprints of a security guard. Developed in the 1800s as an anti-poaching guard for gamekeepers, its purpose has since changed to a family guardian. 

Obviously not built for a confined home, this dog needs room to roam. Moderate exercise needs means this dog is low-maintenance, but that does not mean it can be left unattended. Its immensely powerful stature will cause it to accidentally destroy the house and any small children that may be present. The dog is generally unaware of its size, so an improperly trained one will consider itself a lapdog. 

The Bullmastiff is an incredibly loyal family dog that excels if properly trained and socialized. If the owner is not willing to undergo the necessary care, then they should look elsewhere for the sake of safety.

Bullmastiff History

Originating in 19th century Britain, the Bullmastiff was created to protect the many estates that were victim to poachers. It is the product of specialized breeding between Mastiffs and Bulldogs. The purpose was to tackle and overpower a poacher, but not maul them. That way, the poacher would be healthy for trail and persecution. 

For years, their history revolved around fighting both man and beast, and its original name was simply the “Gamekeeper’s Night-Dog.” Eventually, advancing technology made the Bullmastiff obsolete, and it had no other place except to protect families and their households. 

The early 20th century saw a significant increase in the breed’s popularity, as it won numerous Challenge Certificates. In 1933, the Bullmastiff received recognition by the AKC.

Bullmastiff Character

Bullmastiff tend to be rowdy and irresponsible if left untrained. They retain much of their guarding instinct, so they run the risk of aggression towards visitors unless that behavior is curtailed. But even then, supervision is recommended when the dog is playing with small children. 

Training can also be a hassle, as these dogs are very stubborn. The best way to make progress is to break its assumption that it is the alpha dog. From there, strong leadership and a firm hand are needed to reinforce what it learns. And the Bullmastiff is immune to any bullying tactics. 

Socialization from puppyhood is ever important, but even then it can be aggressive and untrustworthy around other animals. Particularly concerning other Mastiffs of the same gender, adults will be very aggressive. 

Small pets, as usual with most big dogs, run the risk of being trampled under the dog’s huge paws. The Bullmastiff is a confusing breed. It is an extremely loyal family dog, but its instincts tend to get in the way, making it a potential danger.

Bullmastiff Care

The Mastiff requires minimal grooming. Occasional brushing with a firm bristle brush will suffice. Bathing or dry shampooing should be done when necessary. The Mastiff is prone to hip and elbow dysplasia, bloat, ectropion, PRA, cardiomyopathy, and gastric torsion. They also have a tendency to drool and snore.

Bullmastiff Training

Early socialization and obedience are crucial for this breed. The Mastiff requires a dominant handler. They do not respond to harsh or heavy-handed methods. They are eager to please but may be difficult to train. This breed does best with firmness, fairness, patience, respect, and consistency. They excel in guarding, military and police work, weight pulling, and search and rescue.

Bullmastiff Health

Common Health Issues for the Bullmastiff:
Disclaimer: While we try our best to provide accurate medical reference information, it is very likely that we have errors on our website. Do not use this website to diagnose or treat your dog. Please check with your veterinarian for health advice and treatment options.

Anal Glands Two small glands just inside your Bullmastiff
Arthritis Osteoarthritis, or degenerative joint disease, is a progressive, debi...
Blindness Full or partial loss of vision in one or both eyes.
Bloat potentially fatal emergency in which the stomach distends with gas and twists ou...
Cataracts A cataract is any opacity within a lens. The opacity can be very smal...
Cerebellar Atrophy breakdown of a part of the brain leading to lack of co...
Dandruff
Deafness A hearing defect in one or both ears.
Diabetes Mellitus Diabetes mellitus is a disease of the endocrine syste...
Diarrhea
Distemper
Dominance Aggression a bullying personality that can make a dog aggress...
Ear Infections ear inflammation often associated with allergies or other skin...
Elbow Dysplasia a malformed elbow joint, causing variable degrees of lamenes...
Entropion This is a condition in which the lower lid margins roll inward to the...
Fear Aggression shyness or timidity that can make a dog aggressive or more d...
Flatulence
Fleas
Food Allergies
Foot Infection
Frequent Urination
Fungal Infections
Glaucoma An increased fluid pressure within the eye leading to pain and potentia...
Growths
Heart Disease
Heartworms
Hiccups
Hookworms
Hypothyroidism Hypothyroidism is a disorder of the thyroid gland -- two sm...
Incontinence
Inflammatory Bowel Disease
Kennel Cough
Obsessive Licking
Obsessive-Compulsive Disorder spinning, tail-chasing, or other...
Obsessive-Compulsive Skin Injury obsessively licking the sk...
Osteochondrosis Osteochondrosis (also known as OCD) is a common, painful ...
Panting
Parvovirus
Paw Licking
Progressive Retinal Atrophy Progressive retinal atrophy, or P...
Prostate Problems
Rabies
Recurring Ear Infections
Retinal Dysplasia Retinal dysplasia is a type of retinal malformation.<...
Roundworms
Separation Anxiety fear of being alone
Skin Allergies
Snoring and Honking
Snorting
Tapeworms The adult Dipylidium caninum lives in the small intestine of the dog....
Undescended Testicle testicle that remains in the abdomen and is at hig...
Urinary Tract Infection an infection of the bladder or kidneys that ...
Vomiting Vomiting is a reflex action in which food and/or fluid are brought up f...
Whipworms Whipworms are intestinal parasites which are about 1/4 inch (6 mm) lo...
Wobbler Syndrome instability of the neck vertebrae leading to pain, leg wea...

Less Common Health Issues for the Bullmastiff:
Disclaimer: While we try our best to provide accurate medical reference information, it is very likely that we have errors on our website. Do not use this website to diagnose or treat your dog. Please check with your veterinarian for health advice and treatment options.

Addison's Disease an adrenal gland deficiency that requires lifelong hormo...
Amyloidosis abnormal protein deposits in joints, kidneys, and other organs, whic...
Anal Gland Adenocarcinoma a type of malignant tumor
Anemia A decrease in the number of red blood cells (RBC's) or the amount of hemoglobi...
Aortic Stenosis malformed heart valve
Arrhythmias abnormal, erratic heartbeats
Atrial Septal Defect An atrial septal defect is a defect or hole in ...
Bacterial Skin Infections Pyoderma is the medical term used to ...
Bladder Cancer malignant tumor of the urinary bladder
Blocked Tear Ducts malformed ducts between the eye and nose, leading to p...
Blood Cell Toxins
Bone Cancer
Brachycephalic Airway Syndrome one or more respiratory abnorm...
Brain Tumors cancer of the brain
Breast Adenocarcinoma malignant breast tumor
Breast Cancer malignant breast tumor
Bronchitis
Cancer
Canine Alzheimer's Disease Canine cognitive dysfunction "...
Cauda Equina Syndrome compression of the nerves in the lower spine cau...
Cherry Eye protruding third-eyelid gland
Ciliary Dyskinesia failure of microscopic hairs lining the respiratory tr...
Clotting Issues
Collapsing Trachea flattened tracheal cartilage that makes it harder to b...
Congestive Heart Failure In congestive heart failure, the heart ...
Conjunctivitis
Coonhound Paralysis Coonhound paralysis is an acute neurologic disord...
Copper Storage Disease
Corneal Ulcers painful erosion on the surface of the eye
Crystals and Stones
Cushing's Disease overproduction of cortisol by the adrenal glands
Cystine Urine Crystals abnormal mineral deposits in the urine that ca...
Dancing Dobermans
Deep Bacterial Skin Infections
Demodectic Mange
Digestive Enzyme Deficiencies
Dilated Cardiomyopathy disease that causes weakened heart contraction...
Dizziness
Droopy Face
Dry Eye
Ductus Arteriosus
Dudley Nose
Dyskinesia
Ectopic Ureters tubes from the kidneys that connect with the urethra rather ...
Ectropion
Encephalitis brain inflammation, often causing seizures, abnormal behavior, or ...
Epilepsy Epilepsy simply refers to repeated seizures.
Esophageal Stenosis
Exocrine Pancreatic Insufficiency pancreas that produces l...
Eye Injuries
Eyelash and Eyelid Problems
Facial-Fold Dermatitis recurrent skin infections in dogs with deep fo...
False Pregnancy
Fibrosarcoma
Foot-Dragging
Heart Holes
Heart Murmurs
Heart Tumors
Hemangiosarcoma malignant tumor most often found on the spleen or the heart
Hemolytic Anemia  decrease in the number of red blood cells (RBC's)...
Hemophilia a blood clotting deficiency
Hemophilia A A blood-clotting deficiency.
Hemophilia B a blood clotting deficiency
Hemorrhagic Gastroenteritis severe, potentially fatal vomiting a...
Hermaphroditism having "mixed" reproductive organs, such as both a vagina an...
Hip Dysplasia Hip dysplasia simply stated means an abnormal formation of th...
Hydrocephalus accumulation of cerebrospinal fluid within the skull, potentiall...
Hypoglycemia low blood sugar, potentially leading to seizures
Immune-Mediated Skin Disease "Pemphigus complex" i...
Inguinal Hernia a gap in the abdominal muscles that must be closed surgicall...
Intestinal Cancer
Intussusception
Inward-Growing Eyelashes eyelashes growing from the underside of th...
Irritable Bowel Disease inflammation of the intestines, causing diar...
Keratoconjunctivitis Sicca a deficiency in tear production that c...
Kidney Dysplasia malformation of one or both kidneys, potentially leading t...
Kidney Failure
Knee Injuries
Laryngeal Paralysis failure of the larynx to open fully, causing breathi...
Legg-Calve-Perthes Disease disintegration of the hip joint
Lens Luxation The lens of the eye normally lies immediately behind the iris...
Leukemia
Little White Shaker Syndrome brain disorder causing severe head...
Liver Problems
Liver Tumors
Low Platelets
Lung Clots
Luxating Kneecaps Patellar luxation is usually a congenital condition i...
Lyme Disease
Lymphoma a blood cell cancer affecting the lymph nodes, bone marrow, or other organ...
Lysosomal Storage Disease enzyme deficiency that causes nerve-cell...
Megaesophagus an esophagus that doesn't contract properly, leading to regurgit...
Meningitis
Mouth Tumors
Multiple Myeloma
Myasthenia Gravis inability of nerve signals to control muscles, causing w...
Neck Instability disorder of the upper spine that can lead to pain or paral...
Nerve Atrophy breakdown of nerve
Neutering
Osteosarcoma a bone cancer
Pancreatitis inflammation of the pancreas, causing severe abdominal pain and vo...
Pannus an inflammatory disease of the eyes
Panosteitis bone inflammation in growing dogs
Paralysis
Patent Ductus Arteriosus an abnormal connection between the pulmona...
Phosphofructokinase Deficiency
Platelet Deficiency blood disorder potentially leading to bruising or bl...
Portosystemic Shunt Portosystemic shunts are abnormal vascular connec...
Pulmonic Stenosis a malformed heart valve
Pyloric Stenosis narrowing of the opening between the stomach and small int...
Pyruvate Kinase Deficiency a condition causing anemia
Respiratory Tract Cancer
Scabies Sarcoptes scabiei var canis infestation ("scabies") is a h...
Seborrhea skin disease causing severe skin flaking and, sometimes, skin infections...
Seizures
Shedding
Shock
Skin Cancer any of several malignancies that target the skin
Spinal Cord Tumors
Spinal Disk Disease disk degeneration leading to pain, weakness, or para...
Splitting Nails
Squamous Cell Carcinoma a type of skin cancer
Stomach Cancer malignant tumor in the stomach
Submissive Peeing
Swollen Ear
Systemic Lupus Erythematosus an immune-system attack on various...
Tail-Fold Dermatitis skin irritation caused by moisture and bacteria ac...
Tearstaining Tear stains are reddish/brownish marks found on the inside corn...
Territorial Aggression
Testicular Tumor cancer of a testicle
Tetralogy of Fallot a severe heart defect
Tick Paralysis Tick paralysis is an acute, progressive, ascending motor pa...
Urinary Stones rocklike mineral deposits in the kidneys or bladder that can p...
Urinary Tract Cancer Cancer of the canine urinary bladder tract.
Uterine Infection The word “pyometra” is derived from latin...
Uveodermatologic Disorder immune-system attack on the eyes and the...
Valve Disease malformation or malfunction of one or more of the four heart val...
Vascular Ring Anomaly blood vessel defect that can constrict the esoph...
Ventricular Septal Defect a hole between the lower two chambers of...
Von Willebrand's Disease A group of inherited conditions that af...
Wobbly Kneecaps Medial patella luxation is a condition in which the ...
Wobbly Necks Caudal Cervical Spondylomyelopathy, commonly called Wobbler&rsq...

Bullmastiff Resources

American Bullmastiff Association