Really need some advice. Our 7 yr old neutered Tom cat seems to have taken to entering other people's houses and bullying/fighting their cats (I have been made aware of this via the village fb page). Apparently he hisses, spits and howls when approached and (understandably) people are annoyed and upset by him. He has been down in the dumps lately (confirmed by the vet - nothing medically wrong with him. Might be weather related as he is a Spanish rescue cat) but not sure if that is related. Am keeping him in at the moment but that is making him even more depressed. Any ideas on how to resolve the issue (bar building him a catio - DH would never agree to that, he wants me to rehome him). Thanks