(a) Principal display panel means the part of a label on the pet food or specialty pet food that is most likely to be displayed, presented, shown or examined under normal and customary conditions of display for retail sale.

(b) Ingredient statement means a collective and contiguous listing on the label of the ingredients of which the pet food or specialty pet food is composed.

(c) Immediate container means the unit, can, box, tin, bag, or other receptacle or covering in which a pet food or specialty pet food is displayed for sale to retail purchasers, but does not include containers used as shipping containers.