Bullmastiff
Bullmastiffs are powerful, fierce, and strong dogs. They are great guard dogs with a naturally aggressive temperament. Bullmastiffs are incredibly reliable and obedient with proper training. Early socialization is a must for these dogs to prevent any unpleasant situations.
This breed is not a good choice for the first time owner because they can be strong-willed and because they need firm and experienced owners who will know to work with them. When properly trained and socialized they can be great family dogs that will get along well with everybody and especially kids.
FUN FACT: The Bullmastiff’s nickname is “The Gamekeeper’s Night Dog”.