Agression

Question
I have a large 2 1/2 year old gsd whom I have had since he was 8 weeks.  He has always been fine with children and adults, but recently he has started to "not like" a couple of teenagers where we live.  He now hates anyone coming up our drive, I have just put this down to him being a grown up now.  I obviously dont want this to get any worse and wonder should i get him neutered, would this help any escalation.  We have no problems with our "pack", my husband is top dog ha ha and my 11 & 6 year old children have no problems telling him what to do!  He is soft with us, but I would hate him to become a dog that shows agression everytime the door opens.

Answer
Yes, get him neutered.  It is no cure all, but should help.  Give things a little time afterwards.  Unneutered males are frequently the ones involved in biting.  

Leadership is very important.  However, it may take more.  You may need to look into a private trainer or behaviorist.