• And the same guy said Great Danes are the best security/guard dogs in the world.lol lol lol lol. Could laugh all day. I also know a person who said german shepherds and Rottweilers don't need training to be guard dog you can just say the commands and they will attack! Also the person said Rotweiler, Doberman, and GSD will let you in the house when robbing but won't let you out! But the biggest one is; pitbulls are born to kill MAN!!