I have the world's sweetest 15 week old mini-aussie. He is literally a cuddle bug... except when he is not. Yes, he does the normal puppy nipping in play and biting my robe as it is swinging.. that seems normal - but - if he needs to be redirected (jumps on couch - won't come down, etc) and we must hold onto his harness to move him, he turns his head and bites (hard) over and over as long as we keep our hand there. It is AWFUL. I do training with harness grabbing and he loves it... no worries or reaction. If he his not doing something wrong and I grab his harness to move him somewhere, he is fine.. it is ONLY when he knows he is doing something wrong and he DOESN'T want someone to move him. This is NOT OK! If it doesn't stop, he won't be able to stay here, sadly. I love him so much and it would break my heart - but this is a NO GO. Please help me.