Working group · Giant
Mastiff (English)
Dignified, courageous, docile family guardian.
Lifespan6–10 yrs
Weight120–230 lb
Height27.5–30+ in
Shedding Moderate
Exercise Low
Grooming Low
Health conditions to know
Hip & elbow dysplasia
Very high in giant breeds; screen breeding dogs.
Bloat (GDV)
High risk; discuss preventive gastropexy.
Dilated cardiomyopathy
Giant-breed heart-muscle disease.
Cystinuria & PRA
DNA-testable bladder-stone and eye diseases.
Recommended health screenings
Questions worth asking a breeder about the parents, or your vet about your dog:
- OFA hip & elbow
- Cardiac evaluation
- DNA: cystinuria, PRA, DM
- Thyroid panel
Who it suits
Owners with space and budget for a giant, short-lived companion.