We moved house 6/7 weeks ago and Porky, our cat, had settled in lovely. I've noticed now however that' he's started picking fights with all the local cats. I understand that they have to work out the hierarchy and he needs to establish his place in it etc, but I've watched him twice this week and he's slowly but surely tormenting and winding up every other cat in their own gardens. I'm particularly worried about how he behaves with next doors cat who is 13yrs old and lovely. Porky really went for him before (fur everywhere, an ear in the mouth etc) and I intervened with a water pistol of all things. Is there anything I can do? Advice please before he gets himself into real trouble 