Over the past few weeks,a new cat has arrived on the scene at my house and has been hanging around all hours of the night/early morning,howling,crying and generally making some godawful sounds.It's not injured and looks in pretty good shape.I suspect it's male by the look of it.It's the beginning of spring here in Sydney Australia,so it's not in season.It is now acting aggressively toward my little female cat,Asia,scratching and bullying her,then staring at her through the glass doors at the front of our house.I would like to know if anyone has a simple strategy for keeping it away from our premises and our cat.