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https://historycolored.com/articles/7385/when-pope-gregory-ix-declared-a-war-on-cats/
12th century tho. I can say for sure they were trying to oppose ancient religions in all ways they could in ancient time, with far reaching echoes.
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I don't think it has anything to do with religion either. Because superstitions were the reason for the slaughter of cats in the Middle Ages. No religion likes superstitions. (By the way, I believe that there is actually only one religion that exists under different names)