Gates of Heaven (1980)

This classic documentary by Errol Morris showcases workers in the animal burial industry while dealing with heavier existential questions regarding mortality and the afterlife. The first pet mortician featured is Floyd "Mac" McClure, who believes that a graceful burial is as important for pets as it is for people. The film chronicles his struggles to keep his niche business afloat, and interviews several of his associates and one of his competitors, the manager of a rendering plant.