The English Mastiff dates all the way back to the ancient Roman times. He was used for battle against dogs, large animals, and even human gladiators. In Medieval England the English Mastiff more close to what we know now was used for big game hunting and guard dog work. Male Mastiffs tend to make the best guard dogs. They stand 27" - 30" minimum and weigh 120 - 230 lbs. #English #mastiff #large #dog #guardian #purebred