No one can tell for sure what is going on with those dark green poops with slime, except for your vet. Anytime there is weight loss it is cause for concern and a visit to the vet is needed ASAP. The poops you mention with slime are usally ECE and almost all pet store ferrets have ECE. When bringing a new ferret home, it is a good idea to have it quarantined and get it to the vet before you start the introduction process to the rest of the clan. You should probably take your exitisting ferret(s) in also, because they have been exposed too. Don't feel bad it's very common and easily cured. Get the gang to the vet ASAP. I hope that helps. Kim the Oregon one Kim Reyes Residential Real Estate Specialist Direct (503) 380-4195 Toll Free 1-877-490-2595 http://www.kimreyes.com [Posted in FML issue 3799]