I just found this website, and thought you all might like to look at it
to see what exactly is in your ferrets' food.
 
http://www.beefystuff.com/sleddog/nutrition.html
 
~Keri
 
[Moderator's note: Mini-review of the site: A nice place to read the
AAFCO definitions, some of which have been modified.  It's a commercial
site with at least some "spin" toward their products and I did note a
incorrect statement in my casual glancing.  But a good read.  BIG]
[Posted in FML issue 4851]