http://www.smartgroups.com/message/readmessage.cfm? gid=1423922&messageid=10744&startid=10756 NO. The total protein level is only 30%, which is too low for ferrets. If they have a version with high protein (35-55%) level then it may be ok for ferrets. 30% protein would be ok for dogs and maybe ok for cats, but again it is too low for ferrets. Hope that helps Jerry Murray, DVM [Posted in FML issue 4641]