Our 3.5 year old female died a couple days ago. She had lost a little bit of weight, but nothing alarming. She was very active, eating, drinking, everything. In fact she was, as usual, the loudest and friendliest of our 5. I was needless to say shocked to find her passed away in a corner of the cage when I went to feed them a few nights ago. Any ideas as to what might have caused this? As I said, she was acting normal other than some weight loss.