Why is it that when pup is attached to lead (25') he comes with vigor, but when off he will not? For example, when he is in my backyard free-ranging I call him and he comes right over, but when its time to retrieve he wants to play with it and run away. When he retrieves with the lead on him he heels with no delay. In composing this post I think I figured it out--he is "collar-wise." Ok, so how do I prevent it? The book I am following insists this is apart of the conditioning process. Whats your take? One day will he just stop the off the lead antics? (18 wk old male chessy) Perhaps whenever I give a command I should be in a position to enforce it.