Excel cat food is the store's generic brand of "premium" pet food. I bought some Authority (another like brand) kitten food the other day and the ferrets and cats like it. Basically, if the first ingredient is poultry or it's by-product, the protein is 32%+ and the fat content is 18-22%, it is good for ferrets. I STILL recommend a mix of quality foods (2 or 3) for variety and balance. Pam / STAR* [Posted in FML issue 1357]