As I recall, ferrets can NOT be successfully bred with American mink, but can with European mink. Yes, some have been with M. putorius, and some have been with M. Eversmanni. In Ferret Genetics you will find a NUMBER of crosses (info especially from some Russian and Swedish posters) so check the search engine there for those posts and links, Shona. http://groups.yahoo.com/group/Ferret-Genetics/ -- Sukie (not a vet) Ferret Health List http://www.smartgroups.com/groups/ferrethealth FHL Archives http://fhl.sonic-weasel.org International Ferret Congress http://www.ferretcongress.org [Posted in FML issue 4995]