The island of cats has a cat problem. Officials in Cyprus, the small island nation in the eastern corner of the Mediterranean, estimate there is roughly one feral cat for every one of its 1 million inhabitants — though activists contend the actual population is hundreds of thousands higher. In late September, the island’s parliamentary committee on the environment was told that an existing sterilization program is too limited to contain the burgeoning cat population. “It’s a good program, but it needs to expand,” said Environment Commissioner Antonia Theodosiou, noting that the program conducts only about 2,000 sterilizations annually on...