The '''integumentary system''' is an organ system that forms the protective covering of an animal and comprises the [[Skin - Anatomy & Physiology|skin]] (including [[Skin - Anatomy & Physiology#Glands|glands]] and their products), [[Hair - Anatomy & Physiology|haircoat]] or [[Feather - Anatomy & Physiology|feathers]], [[The Integument of Exotic Species - Anatomy & Physiology|scales]], [[Skin - Anatomy & Physiology#Cutaneous appendages|nails]], [[Hoof - Anatomy & Physiology|hooves]] and [[Horn - Anatomy & Physiology|horns]]. | The '''integumentary system''' is an organ system that forms the protective covering of an animal and comprises the [[Skin - Anatomy & Physiology|skin]] (including [[Skin - Anatomy & Physiology#Glands|glands]] and their products), [[Hair - Anatomy & Physiology|haircoat]] or [[Feather - Anatomy & Physiology|feathers]], [[The Integument of Exotic Species - Anatomy & Physiology|scales]], [[Skin - Anatomy & Physiology#Cutaneous appendages|nails]], [[Hoof - Anatomy & Physiology|hooves]] and [[Horn - Anatomy & Physiology|horns]]. |