I'm with the lads who like a dog that will never show aggression towards any human, no matter what the scenario. I disagree with gnasher, he reckons this means your dominating the dog all the time, and it is a cowering wreck or something, this is so far from the truth, all it takes is adequate socializing as a pup, and never let the possessiveness over food or toys or anything else develop in the first place, as a whelp a dog wont behave in that way, it is all behavior that the dog develops as it gets older. I often sit the pup on my lap and feed it, or make a fuss when feeding, take bowl away