The mod you're looking for will fit the bill in what you want the wolf leader to do. Check out
Summon Wolf Leader.
Read #7 and #14 in the
Please Read This Before Posting thread about bumping up your thread and not being patient to wait for Mr Squinge's response. He has a lot of stuff on his plate right now to deal with.
Thread is closed now. If you have a question or a request, do so in either Mod Help or Mod Request Section.