Lyric discussion by Ptericles 

Cover art for Hourglass lyrics by A Perfect Circle

Sentinel animal | definition of sentinel animal by Medical ... [Search domain medical-dictionary.thefreedictionary.com/sentinel+animal] https://medical-dictionary.thefreedictionary.com/sentinel+animal an animal deliberately placed in a particular environment to detect the presence of an infectious agent, such as a virus. An animal susceptible or sensitive to a particular environmental factor—e.g., a toxin, pathogen, radiation—whose illness or death serves to warn humans of an impending danger ...

Vineyards for centuries have been using roses to detect powdery mildew before the vines got infected. Roses, The Canary In the Coal Mine Vineyard Style! - YouTube https://www.youtube.com/watch?v=BIa5pXm4gtc Video for canary in the coal mine rose ▶ 3:24 Jun 12, 2018 - Uploaded by Hoops and more!

The idea of using canaries is credited to John Scott Haldane, known to some as “the father of oxygen therapy.” His research on carbon monoxide led him to recommend using the birds, writes Esther Inglis-Arkell for Gizmodo. He suggested using a sentinel species: an animal more sensitive to the colorless, odorless carbon monoxide and other poisonous gases than humans. If the animal became ill or died, that would give miners a warning to evacuate. https://www.smithsonianmag.com/smart-news/story-real-canary-coal-mine-180961570/

So if Tokyo Kitty swallowed rose and canary, these sentinels would die leaving everyone in danger. Perhaps, the sentinels in our recent past culture are referenced in "so Long, and Thanks for All the Fish" "Now Willy Wonka, Major Tom, Ali, and Leia have moved on Signal the final curtain call in all its atomic pageantry" If Tokyo Kitty swallowed the sentinels, it might be intended to symbolize a cute, shallow distraction from the warnings from our cultural sentinels.

My Interpretation

Procne is a character in Greek mythology, the daughter of King Pandion of Athens. She was married to King Tereus of Thrace. Her sister Philomela decided to visit her sister's palace; while there, Tereus raped her and then cut off her tongue so that she wouldn't speak of the crime. However, Philomela managed to weave the crime onto a tapestry and passed it to her sister. When Procne realised what had happened, she killed her son Itys, boiled him, and served him to Tereus. After Tereus finished his meal, Procne and Philomela showed the head of the poor boy to...