When buying a puppy, of any breed, check with the breeder as to the health of the puppy, its siblings, parents and grandparents. It is not always possible to see the father or grandparents in person. 

Some of the most common problems in the Bullmastiff breed are:

• Hyperthyroidism
• Joint problems (i.e. Hip Dysplasia, OCD, Pano)
• Allergy problems
• Immune system dysfunction
• Lazy whelpers & difficulty with breeding
• Cancer and heart conditions
• Eye problems (i.e. entropion, ectropion, PRA)
• Bloat/gastric torsion

By researching the lines your puppy comes from, you can help yourself learn more about your future pet. There is still no guarantee as to the general health of an animal. Just as with humans, animal’s bodies change as they mature. Some dogs can eat the same food for a year and then suddenly develop an allergy to a certain ingredient. Some dogs have compromised immune systems, so their vaccines may not protect them. You might do everything right in raising the perfect dog, then at two years of age find out that your dog won’t pass its OFA X-ray.

By breeding health stock, a breeder is striving to produce healthy stock; however, nature sometimes throws a curve ball and oddities appear.

Cancer has become the number one killer of our breed as well as other breeds.

Some puppies may have "innocent" heart murmurs.  Usually they are benign, and are gone by the time the pup is 6 months to a year. There are more cases of more severe heart problems each year.