LOL
I was just reading this post and comparing it to another one on the same topic. The advice ranges from ignoring, he'll out grow it, to actually physically hitting.
How are these poor people suppose to know what to do.
Take my advice and Go to the experts
Check out Cesar Milan, aka The dog whisperer's website.
http://www.dogchannel.com/experts/ce...aspx?WT.srch=1