Your dog is special! She’s your best friend, companion, and a source of unconditional love. Chances are that you chose her because you like Mastiffs and you expected her to have certain traits that would fit your lifestyle:
Affectionate, easygoing, and lovable
Large, strong, and athletic
Protective of owners; excellent guard dog
Adaptable to a wide variety of living conditions
Confident, steady, and fearless
Docile and devoted
However, no dog is perfect! You may have also noticed these characteristics:
Can be rambunctious and rowdy, especially as a puppy
Willful and stubborn if you don’t show strong leadership
Can be gassy and drool a lot
Makes a lot of snorting, snuffling, and wheezing noises, and she may snore
Takes up a lot of room due to her massive size
Likes to dig
Is it all worth it? Of course! She’s full of personality, and you love her for it! She is watchful and loyal. Although she rarely barks, she is very aware of her surroundings and and an excellent guardian.
The English Mastiff is a very old breed; the first written records date back to 55 BCE. The Mastiff is one of the heaviest of all the dog breeds. It is believed that the first Mastiff in America arrived on the Mayflower. Mastiffs are natural guardians of family and home, but they are rarely aggressive. They are described as Gentle Giants: calm and loving with children and other animals. The Mastiff bonds closely with family and needs close human companionship.
Your Mastiff’s Health
We know that because you care so much about your dog, you want to take good care of her. That is why we have summarized the health concerns we will be discussing with you over the life of your Mastiff. By knowing about health concerns specific to Mastiffs, we can tailor a preventive health plan to watch for and hopefully prevent some predictable risks.
Many diseases and health conditions are genetic, meaning they are related to your pet’s breed. There is a general consensus among canine genetic researchers and veterinary practitioners that the conditions we’ve described herein have a significant rate of incidence and/or impact in this breed. That does not mean your dog will have these problems; it just means that she is more at risk than other dogs. We will describe the most common issues seen in Mastiffs to give you an idea of what may come up in her future. Of course, we can’t cover every possibility here, so always check with us if you notice any unusual signs or symptoms.
This guide contains general health information important to all canines as well as the most important genetic predispositions for Mastiffs. This information helps you and us together plan for your pet’s unique medical needs. At the end of the booklet, we have also included a description of what you can do at home to keep your Mastiff looking and feeling her best. You will know what to watch for, and we will all feel better knowing that we’re taking the best possible care of your pal.
General Health Information for your Mastiff
Dental disease is the most common chronic problem in pets, affecting 80% of all dogs by age two. And unfortunately, your Mastiff is more likely than other dogs to have problems with her teeth. It starts with tartar build-up on the teeth and progresses to infection of the gums and roots of the teeth. If we don’t prevent or treat dental disease, your buddy will lose her teeth and be in danger of damaging her kidneys, liver, heart, and joints. In fact, your Mastiff’s life span may be cut short by one to three years! We’ll clean your dog’s teeth regularly and let you know what you can do at home to keep those pearly whites clean.
Mastiffs are susceptible to bacterial and viral infections — the same ones that all dogs can get — such as parvo, rabies, and distemper. Many of these infections are preventable through vaccination, which we will recommend based on the diseases we see in our area, her age, and other factors.
Obesity can be a significant health problem in Mastiffs. It is a serious disease that may cause or worsen joint problems, metabolic and digestive disorders, back pain and heart disease. Though it’s tempting to give your pal food when she looks at you with those soulful eyes, you can “love her to death” with leftover people food and doggie treats. Instead, give her a hug, brush her fur or teeth, play a game with her, or perhaps take her for a walk. She’ll feel better, and so will you!
All kinds of worms and bugs can invade your Mastiff’s body, inside and out. Everything from fleas and ticks to ear mites can infest her skin and ears. Hookworms, roundworms, heartworms, and whipworms can get into her system in a number of ways: drinking unclean water, walking on contaminated soil, or being bitten by an infected mosquito. Some of these parasites can be transmitted to you or a family member and are a serious concern for everyone. For your canine friend, these parasites can cause pain, discomfort, and even death, so it’s important that we test for them on a regular basis. We’ll also recommend preventive medication as necessary to keep her healthy.
Spay or Neuter
One of the best things you can do for your Mastiff is to have her spayed (neutered for males). In females, this means we surgically remove the ovaries and usually the uterus, and in males, it means we surgically remove the testicles. Spaying or neutering decreases the likelihood of certain types of cancers and eliminates the possibility of your pet becoming pregnant or fathering unwanted puppies. Performing this surgery also gives us a chance, while your pet is under anesthesia, to identify and address some of the diseases your dog is likely to develop. For example, if your pet needs hip X-rays or a puppy tooth extracted, this would be a good time. This is convenient for you and easy for your friend. Routine blood testing prior to surgery also helps us to identify and take precautions for common problems that increase anesthetic or surgical risk. Don’t worry; we’ll discuss the specific problems we will be looking for when the time arrives.
Genetic Predispositions for Mastiffs
Gastric Dilatation and Volvulus, also known as GDV or Bloat, usually occurs in dogs with deep, narrow chests. This means your Mastiff is more at risk than other breeds. When a dog bloats, the stomach twists on itself and fills with gas. The twisting cuts off blood supply to the stomach, and sometimes the spleen. Left untreated, the disease is quickly fatal, sometimes in as little as 30 minutes. Your dog may retch or heave (but little or nothing comes out), act restless, have an enlarged abdomen, or lie in a prayer position (front feet down, rear end up). Preventive surgery in which the stomach is tacked down or sutured in place so that it is unlikely to twist is an option. If you see symptoms, take your pet to an emergency hospital immediately!
Bone and Joint Problems
A number of different musculoskeletal problems have been reported in Mastiffs. While it may seem overwhelming, each condition can be diagnosed and treated to prevent undue pain and suffering. With diligent observation at home and knowledge about the diseases that may affect your friend’s bones, joints, or muscles you will be able to take great care of him throughout his life.
A genetically linked neurological condition that could occur in your Mastiff causes a wobbly, drunken gait. This condition, known as wobbler disease or wobbler syndrome, happens because there is a narrowing of the vertebrae in the neck, which pinches the spinal cord and associated nerves. If the nerves do not send signals to the brain the way they are supposed to, your dog cannot feel his feet. The first signs you will often notice are unstable hind legs, stumbling, and sometimes falling. Medications, neck braces, rehabilitation exercise programs, and surgery are treatment options.
Bladder or Kidney Stones
There are a few different types of stones that can form in the kidney or in the bladder, and Mastiffs are more likely to develop them than other breeds. We’ll periodically test his urine for telltale signs indicating the presence of kidney and bladder stones; they are painful! If your buddy has blood in his urine, can’t urinate, or is straining to urinate, it is a medical emergency. Call us immediately!
Osteosarcoma is the most common bone tumor in dogs. It typically afflicts middle-aged large and giant breeds like your Mastiff. Early symptoms include lameness and leg pain. Early detection is critical! Call right away if you notice that your dog is limping. This is a painful and aggressive tumor, and the sooner it is removed, the better his prognosis.
Not many things have as dramatic an impact on your dog’s quality of life as the proper functioning of his eyes. Unfortunately, Mastiffs can inherit or develop a number of different eye conditions, some of which may cause blindness if not treated right away, and most of which can be extremely painful! We will evaluate his eyes at every examination to look for any signs of concern.
Mastiffs are prone to multiple types of heart disease, which can occur both early and later in life. We’ll listen for heart murmurs and abnormal heart rhythms when we examine your pet. When indicated, we’ll perform an annual heart health check, which may include X-rays, an ECG, or an echocardiogram, depending on your dog’s risk factors. Early detection of heart disease often allows us to treat with medication that usually prolongs your pet’s life for many years. Veterinary dental care and weight control go a long way in preventing heart disease.
Some Mastiffs inherit a heart condition known as pulmonic stenosis. This disease causes a partial obstruction of blood flow from the heart to the lungs, which means the heart must work harder to pump enough blood. If the condition is severe enough, your dog may faint or just seem to run out of energy during exercise. He may also have difficulty breathing, cough, or not grow as much as he should. We’ll test for this disease during your dog’s life and discuss treatment options with you if he has the condition. Surgery is an option when symptoms are severe.
In humans, an allergy to pollen, mold, or dust makes people sneeze and their eyes itch. In dogs, rather than sneeze, allergies make their skin itchy. We call this skin allergy “atopy”, and Mastiffs often have it. Commonly, the feet, belly, folds of the skin, and ears are most affected. Symptoms typically start between the ages of one and three and can get worse every year. Licking the paws, rubbing the face, and frequent ear infections are the most common signs. The good news is that there are many treatment options available for this condition.
Allergies, swimming, overgrowth of hair in the ear canals, or an accumulation of earwax can all predispose your dog to ear infections, which are painful and annoying. Mastiffs are very often afflicted by allergies, which cause itching and inflammation in the ears and elsewhere. The earlier we diagnose this disease, the less discomfort and pain he will suffer. Be sure to call us if you notice him scratching or shaking his head, a foul odor from the ears, or if his ears seem painful to the touch. By monitoring for ear infections and treating them early, we also reduce the likelihood of eardrum damage that can lead to deafness. Most ear infections tend to recur until we work together to control the underlying cause.
There are three types of seizures in dogs: reactive, secondary, and primary. Reactive seizures are caused by the brain’s reaction to a metabolic problem like low blood sugar, organ failure, or a toxin. Secondary seizures are the result of a brain tumor, stroke, or trauma. If no other cause can be found, the disease is called primary, or idiopathic epilepsy. This problem is often an inherited condition, with Mastiffs commonly afflicted. If your friend is prone to seizures, they will usually begin between six months and three years of age. An initial diagnostic workup may help find the cause. Lifelong medication is usually necessary to help keep seizures under control, with periodic blood testing required to monitor side effects and effectiveness. If your dog has a seizure: Carefully prevent him from injuring himself, but don’t try to control his mouth or tongue. It won’t help him, and he may bite you accidentally! Note the length of the seizure, and call us or an emergency hospital.
Underbite (prognathism) affects Mastiffs more than other breeds. In this condition, the lower jaw sticks out further than the upper jaw. Most cases do not require treatment, but if the abnormally positioned teeth are digging into his mouth, chronic pain may result. Extractions or orthodontic work may be needed.
Mastiffs are prone to a common condition called hypothyroidism in which the body doesn’t make enough thyroid hormone. Signs can include dry skin and coat, hair loss, susceptibility to other skin diseases, weight gain, fearfulness, aggression, or other behavioral changes. We’ll conduct a blood screening test annually to screen for the disease. Treatment is usually simple: replacement hormones given in the form of a pill.
Breeds with a large head and small pelvis are more prone to difficulties during the birthing process. Her pelvis is just too small to pass puppies and a C-section is often required for her health and that of her puppies. If you are interested in breeding your Mastiff, speak with us first. We can help you make an informed decision based on body conformation of both sire and dam.
Taking Care of Your Mastiff at Home
Much of what you can do to keep your dog happy and healthy is common sense, just like it is for people. Watch her diet, make sure she gets plenty of exercise, regularly brush her teeth and coat, and call us or a pet emergency hospital when something seems unusual (see “What to Watch For” below). Be sure to adhere to the schedule of examinations and vaccinations that we recommend for her. This is when we’ll give her the necessary “check-ups” and test for diseases and conditions that are common in Mastiffs. Another very important step in caring for your pet is signing up for pet health insurance. There will certainly be medical tests and procedures she will need throughout her life and pet health insurance will help you cover those costs.
Routine Care, Diet, and Exercise
Build her routine care into your schedule to help your Mastiff live longer, stay healthier, and be happier during her lifetime. We cannot overemphasize the importance of a proper diet and exercise routine.
Supervise your pet as you would a toddler. Keep doors closed, pick up after yourself, and block off rooms as necessary. This will keep her out of trouble and away from objects she shouldn’t put in her mouth.
She has low grooming needs. Brush her coat as needed, at least weekly.
Mastiffs generally have good teeth, and you can keep them perfect by brushing them at least twice a week!
Clean her ears weekly, even as a puppy. Don’t worry—we’ll show you how!
She has a tendency to be lazy so you must ensure she receives adequate exercise by providing daily walks.
She can be sensitive to warm temperatures; avoid any prolonged exposure and be very alert to the signs of heat stress.
It is recommended that you provide her with soft bedding to help prevent joint problems and calluses.
Keep your dog’s diet consistent and don’t give her people food.
Feed a high-quality diet appropriate for her age.
Exercise your dog regularly, but don’t overdo it at first.
What to Watch For
Any abnormal symptom could be a sign of serious disease, or it could just be a minor or temporary problem. The important thing is to be able to tell when to seek veterinary help, and how urgently. Many diseases cause dogs to have a characteristic combination of symptoms, which together can be a clear signal that your Mastiff needs help.
Give us a call for an appointment if you notice any of these types of signs:
Change in appetite or water consumption
Tartar build-up, bad breath, red gums, or broken teeth
Itchy skin (scratching, chewing, or licking), hair loss
Lethargy, mental dullness, or excessive sleeping
Fearfulness, aggression, or other behavioral changes
Seek medical care immediately if you notice any of these types of signs:
Scratching or shaking the head, tender ears, or ear discharge
Inability or straining to urinate; discolored urine
Cloudiness, redness, itching, or any other abnormality involving the eyes
Dry heaving or a large, tight, painful abdomen
Coughing, exercise intolerance, rapid breathing at rest
Any abnormal shaking, trembling, or excessive involuntary tremors
Dull coat, hair loss, sluggish, weight gain
Leg stiffness, reluctance to rise, sit, use stairs, run, jump, or “bunny hopping”
Partners in Health Care
DNA testing is a rapidly advancing field with new tests constantly emerging to help in the diagnosis of inherited diseases before they can become a problem for your friend. For the most up-to-date information on DNA and other screening tests available for your pal, visit www.Genesis4Pets.com.
Your Mastiff counts on you to take good care of her, and we look forward to working with you to ensure that she lives a long and healthy life. Our goal is to provide the best health care possible: health care that’s based on her breed, lifestyle, and age. Please contact us when you have questions or concerns.
Ackerman L. The Genetic Connection: A Guide to Health Problems in Purebred Dogs. Second edition. AAHA Press; 2011.
Bell JS, Cavanagh KE, Tilley LP, Smith FW. Veterinary medical guide to dog and cat breeds. Jackson, Wyoming. Teton New Media; 2012.
Gough A, Thomas A. Breed Predispositions to Disease in Dogs and Cats. 2nd Edition. Wiley-Blackwell; 2010.
Crook A, Dawson S, Cote E, MacDonald S, Berry J. Canine Inherited Disorders Database [Internet]. University of Prince Edward Island. 2011. [cited 2013 Apr 11]. Available from: http://ic.upei.ca/cidd/breed/mastiff
Breed Specific Health Concerns [Internet]. American Kennel Club Canine Health Foundation, Inc. [cited 2013 Apr 11]. Available from: http://www.akcchf.org/canine-health/breed-specific-concerns/?breed=mastiff