A Bullmastiff typically lives 8–10 years. Most of what determines whether it gets there is routine care rather than anything dramatic.
Vaccination and deworming
The core course starts around six weeks, rabies follows, then annual boosters. Deworming runs fortnightly to twelve weeks, monthly to six months, then quarterly.
The annual check
Once a year for an adult dog, and book it before the hot months rather than during them.
What “protective” means day to day
The Bullmastiff is described as protective, calm, loyal. Of those, protective is the one that shapes an ordinary day most. It is easy to read as a selling point and harder to live with than the word suggests, because it does not switch off when you are busy.
A breed from England, living in India
The Bullmastiff was developed in England. The part that travels badly is rarely temperament - it is the coat and the tolerance for heat. Plan the year around that and most of the rest follows.
What to watch for in a giant dog
For this size class: weight gain and hip health. None is a reason not to own the breed; all are cheaper to manage early.
Planning for about 9 years
A Bullmastiff is with you for about 9 years. Budget and routine both need to survive that, including the last quarter of it when a giant dog needs more veterinary attention than it did young.
Balancing protective against calm
Breeds described as both protective and calm need the two managed together rather than separately. With a giant dog that usually means a predictable routine first and training second - the routine is what makes the training stick.