Now ten months is a long time to fast! I think the longest I've ever had one fast is for about six to seven months...... and he seems to do that every year with no significanct weight loss. It seriously doesn't bother or worry me anymore, because I realize it is normal for him and that he will be fine and resume feeding when he feels like it. And talk about low-maintenance pets! No expense to the owner OR poop to clean up for months at a time!