I forgot to reply to the cow's milk issue... I don't remember for sure, but I think I remember something to the effect that it is the butter fat that's the problem. I wouldn't swear by that, I'm just mentioning it in case someone is looking in to the reason they can follow that as a lead. - Nancy Nancy Hartman CIS graduate student [log in to unmask] U. of Delaware President and founder, Delaware Valley Ferret Club Owner of Percy, Bree, & Popcorn, the ferrets [Posted in FML issue 0387]