check out " tug of war" in the search .
I posted this exact question earlier.. and got alot of helpful info,,
I have been working on NOT tug of war,, but Bailey also loves to fetch, but he would not release,, it was then tug of war.. so after I would throw it,, hed bring it back and I'd hide my hand and say "DROP IT" and after a few times, when he wouldn't see my hands,, he would drop it,, I couldn't believe it,,cause he LOVED the tug so much,, but it worked,, and I notice since we stopped the T/O/W he is not at all as aggressive.. which is what I wanted and was getting worried about,, he used to sit by me and if I went to move him sometimes he'd growl,.. I said " thats it' They have to learn that YOU are the boss and not them! T.O.W makes them feel superior or equal to you, and you cant have that,.,, check out passed threads on this subject,, there is alot of info.. Good LUck!
