Well I can definately say that Angus was a leaner because he loved to do it I don't really care why he did it, I just loved that he loved to be so close to me!
Huney never does, and Roxey does occassionally if she is tired and just happens to be sitting by you and getting petted.
I do think that Bon is going to be a leaner too. We haven't had him quite long enough to see, but he has done it a couple of times when he was tired.
Very interesting thread, I'm glad you brought up this oldie Miranda_Rae