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  My Joey does this with my husband.  Everytime he enters a room he will growl and bark like he is going to tear him to bits (Joey is 3.5 lbs...lol).  He does this too when hubby comes to bed.  I've tried everything too, but nothing has worked.  He also loves my husband and wants his attention if he is sitting down or lying on the floor.  I continue to tell him no, but nothing seems to work.  Sorry I can't help you, but I'll continue to watch this thread...I've tried the suggestions above my post and they haven't worked for me.  
				__________________Janet
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