I trust my 2 good natured Labs 99%. I trust my good natured Shepherd 90%. The Shepherd will chase running people of any size and nip at thier heels, just like her job was when her ancestors were bred. She is very defensive of her property with other dogs as well. Hmmmmmm... just like she was bred for. She does not have free range out of the fenced yard like I occasionnaly give the Labs. I know my dogs, but I've never trusted any of them 100%.
Like Cesar says, "Be the pack leader". And here is the requisite motorcycle reference: "The Leader of the Pack"
Mike Sr.