Basil is 5.6yo and has been fairly amenable all that time but suddenly in the last few days has lashed out at DD1 when she gently stroked him and has scratched my ankle twice for daring to walk past him. He has a sister who is the same as normal. Caught him having a spat with another cat across the road yesterday - I haven't seen any other cats around here for months so could it to be anything to do with having his territory challenged? Normally he loves me and just hates DH so I am really concerned that he has turned on me because I have always been his favourite. Why might this be happening and what can I do to make him feel happier? BTW DD1 is 3.0 and DD2 is 1.2 so have to sort this out quicksmart before one of them gets clawed nastily.