Bullmastiffs are large and powerful dogs. Males typically weigh between 110 to 130 pounds, while females usually weigh around 100 to 120 pounds. They stand about 24 to 27 inches tall at the shoulder, with males being larger in size compared to females.

Bullmastiffs are known for their calm, gentle, and protective nature. They are affectionate with their families and often form strong bonds with their owners. Despite their imposing size, they tend to be good with children and can be gentle companions. Early socialization and consistent training are important to discourage any stubbornness and to ensure they are well-adjusted.

The Bullmastiff has a short, dense coat that is easy to maintain. Common colors include fawn, brindle, and red. The coat is weather-resistant, but regular brushing helps reduce shedding and keeps the coat healthy.

Bullmastiffs thrive in environments where they receive proper attention and care. They can adapt to various living situations, including homes with yards, but they should not be left alone for long periods, as they enjoy companionship. Due to their size and heavy build, moderate exercise is essential to keep them healthy without overstressing their joints.

Bullmastiffs enjoy regular, moderate exercise such as daily walks, gentle play sessions, and opportunities to explore. While they may not have the stamina for intense activities, they can participate in obedience training and some low-energy dog sports. Mental stimulation, through training exercises and interactive toys, is also beneficial for their overall well-being.