84) Bullmastiff

The Bullmastiff is a large, muscular breed of dog that was developed in England as a guard dog. They have a short, dense coat that comes in fawn, brindle, or red, and a powerful, athletic build. Bullmastiffs are known for their intelligence, loyalty, and calm, gentle disposition. They are generally good with children and other pets, but may be reserved with strangers. Bullmastiffs require consistent, firm training and socialization, and need regular exercise to maintain their physical and mental health. They are generally healthy dogs, but can be prone to certain health issues such as hip dysplasia and eye problems.