Select Premium Ferret Diet - Chicken Formula - 4 lb Marshall understands that ferrets have a discrerning palate, which is why they created this delicious protein rich diet. This Select Chicken Formula Premium Ferret Diet uses three pounds of fresh chicken to make every four pounds of formula. This ferret formula is an excellent source of nutrition for ferrets of any age, rich in Omega 3s and amino acids. Your ferret will love the fresh and delicious taste of this formula.