Be sure to catch this taurine discussion http://www.smartgroups.com/message/viewdiscussion.cfm?gid=1423922 &messageid=4011 There are other nutrition discussions there and in the FHL Archives at http://fhl.sonic-weasel.org/ (See especially ones with the name "Willard" attached.) and in the FML Archives http://listserv.cuny.edu/archives/ferret-search.html and in the Performance Foods (Totally Ferret) site (Find it through http://www.google.com .) and other places as links in http://www.ferretcongress.org . as well as others, I'm sure. You will find that Dr. Tom Willard whose doctorate is in animal nutrition is very happy to help people to understand the particulars. He even once helped us design a special diet for a ferret who could not have pre-prepared foods due to an unusual health need. [Posted in FML issue 4124]