I thought the same thing when we added Yogi.  We already had Boo & Gracie Ruth and I wondered if the 3rd one wouldn't get as much lovin.  But that thought quickly went out the door.  My heart hurts sometimes with the love I have for all 3 of my kids.  Just don't try to put the new one into some preconceived hole.  Let him/her be them self and you will be amazed at how quickly and how much you love them.  
