CIRCLE WITH A DOT

@nyrath @Annacats cadaverine and putrescine (plus probably some taurine):
https://www.bbc.com/future/article/20210519-the-hidden-reason-processed-pet-foods-are-so-addictive and the rebuttal/spin from petfood companies: https://www.petfoodindustry.com/news-newsletters/pet-food-news/article/15467986/bbc-claims-corpse-chemicals-are-pet-food-palatants