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]