I used to have big guard dogs but the older I get the less I feel the need for one. My little Parson bitch is one of the most alert watchdogs and won't hesitate to attack an intruder if need be. Cheap to keep, no worries about her mauling someone to death and great in the house. If you look at even the cartels, they usually have small noisy watchdogs, not man killers. I think a lot of people with these monster dogs lack something in their personality or ball sack, not speaking of bull breed enthusiasts who do the breeds justice.