It's natural for a dog to guard his food and bones - it's a must from the wild.
Some owners can live with that, it's just to let him be when he's eating. But it's a problem if he steals something he's not supposed to have. You should be able to get that away from him.
I've always giving them things by hand, holding it for them, taken it away and looked at it and giving it back. That way they get used to it, and none have been agressiv towards me regarding food and bones.
I'm sure Mike can find a lot of links for you - if he's around.
Some owners can live with that, it's just to let him be when he's eating. But it's a problem if he steals something he's not supposed to have. You should be able to get that away from him.
I've always giving them things by hand, holding it for them, taken it away and looked at it and giving it back. That way they get used to it, and none have been agressiv towards me regarding food and bones.
I'm sure Mike can find a lot of links for you - if he's around.