Yes, ferrets and dogs tend to spot fouled water and avoid it. Cats don't. Maybe 15 years ago we had repeated bouts of fouled water locally, and our vets then said two interesting things: 1. Every time it happened they had to treat sick cats from the affected area 2. If your ferret or dog refuses the water don't give it to any other animals including us humans Sukie (not a vet) Recommended ferret health links: http://pets.groups.yahoo.com/group/ferrethealth/ http://ferrethealth.org/archive/ http://www.afip.org/ferrets/index.html http://www.miamiferret.org/fhc/ http://www.ferretcongress.org/ http://www.trifl.org/index.shtml http://homepage.mac.com/sukie/sukiesferretlinks.html [Posted in FML 5991]