Aven pulls himself together, and pulls his tail out from the front of his kilt.  Shakes his head a moment and then<strong>"Thinking about this as if it were a disease, there are a lot of things we need to know.  Does it only affect humans?  At what age?  Can males carry the disease or are we immune?  Are the females truly sterile or are the simply no longer human enough to breed with humans?  Where did it start?"   </strong>