The meibomian glands produce oily secretions that help lubricate the eyes, and the meibomian gland ducts drain out along the margins of the eyelids. (glenerinanimalhospital.com)
Anal glands collect oily secretions from sebaceous glands inside the sacs. (thesprucepets.com)
Thiols have a lingering rotten egg odor, and the skunk's oily secretion makes it difficult to get rid of. (thesprucepets.com)