wetware: That was NOT a naive question at all...Shutzhund is a SPORT..first and formost and we want everyone in it protected at all times...the helper,the handler and the dog.The dog will protect in any circumstance..what we are doing is getting the dog to know the difference from when the helper is just standing there (not being a threat) and when he makes a threatening movement....the dog takes the sleeve...the dog MUST "out" on command.IF my dog ever had to engage in a real life protection,I would want him to injure but NOT kill the person.and I would want him to "out" the person when I told him it was ok to.

 When my trainer trains the police dogs..he wears a full bite suit and the dog DOES bite on wherever he can,arm,leg,back..other places,lol....but he is being trained for patrol..again,what I do is a sport.