Cat Island, is an island in Ehime Prefecture, Japan, known for its large number of feline residents. Felines outnumber humans by a ratio of approximately 10:1. In May this year, fish fillets with something like blue medicine were placed in several places on the island, such as in fields and in front of the fishery cooperative office. Fukuoka City's civil society is considering criminal charges such as violation of the Animal Welfare Law based on suspicious food