Mastiff Dog Breed Overview
The mastiff, commonly referred to as the English mastiff, is among the world's most powerful and largest breeds of dog. This giant breed originated in England and is part of the Working Group according to the American Kennel Club (AKC) and has a calm temper, is loyal, and has a natural guarding instinct.
Although they are huge (their weight may be 120-230 pounds), Mastiffs have been referred to as gentle giants. They are loving to the family members and normally quiet at home.