Shirley, the various polecats are crepuscular as well as multiple close but not as close relatives, so the ***ancestry*** of ferrets is taken to have been crepuscular (dawn and dusk primary times of activity). Rather than look under ferret in your searches check the behavior and ecology papers on polecats. Sukie (not a vet) Current FHL address: http://groups.yahoo.com/group/ferrethealth 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 5545]