Chicken is an excellent source of protein and consists of the clean combination of flesh and skin with or without accompanying bone, derived from the parts or whole carcasses of chicken - exclusive of feathers, heads, feet, and entrails. (AAFCO, 2003) Not all chicken in pet foods is the same. It is important that the manufacturer of the pet food use human-grade chicken and preferably free of hormones and antibiotics. Additionally, make sure the manufacturer does not use chemical preservatives on the chicken such as BHA, BHT and ethoxyquin.