Are Bullmastiffs lazy?

No, Bullmastiffs are not lazy dogs, but they do have a reputation for being relaxed, easygoing, and relatively low-energy indoors. They still need regular exercise and mental stimulation to stay healthy and happy and to prevent them from becoming overweight. Incorporating activities such as obedience training, interactive toys, and nose work can also help keep their minds engaged and prevent them from becoming bored or lazy.