Regular green poops are something to be concerned about, but the 'occasional' one is just food that isn't fully digested. Here's a link to a 'poop chart' that all ferret owners should be familiar with. http://miamiferret.org/poop_chart.htm Jeff In Memory of Neo and Mr. Parker Caring for Trinny, Morphy, Baby Girl, Luna, Dozer, and Possum the Million Dollar Ferret [Posted in FML 6528]