>Ferrets open their eyes during the fifth week. Not before that. Some are >still in "pop eye" stage until the end of the fifth week. Hi, I do not know what's up with your U.S. ferrets but in 35 years in ferret breeding I have yet to see all the kits eyes not open within 23 days, normally 20-21. At this age they are feeding on raw meat, eggs and full cream milk. Chris. [Posted in FML issue 3022]