So we adopted 2 gorgeous cats about 2 months ago. They are house cats as we live in a flat however we have been putting a harness on them and taking them out for half an hour or so each morning just to the back area where they nibble grass, sniff everywhere and generally enjoy themselves.
However the last few days a large grey cat has been appearing at the gate when we are in the back area. The first 2 times My Cat 1 just looked a bit shocked and I took them both in. My Cat 2 hadn't noticed. But today when Big Grey Cat appeared My Cat 1 hissed at him a few times but didn't want to come back in. I let him stay out for a few minutes but I'm worried Big Grey Cat might go for him and My Cat 1 will be at a disadvantage being on a harness. Plus of course I don't want him hurt. Even more worried about My Cat 2 as she's tiny and both of them are scared of even other people when we are outside.
Should I just let My Cats stay out and see how the situation goes? I had never seen Big Grey Cat before last week but now he's there every morning despite what time I take mine out. Should I get a water pistol and spray Big Grey Cat to keep him from coming too close?
Don't mind if he turns out friendly and they have a new pal but don't want a fight and I'm worried if it gets nasty My Cats will regress in confidence and not want to go outside, they have settled in so well since arriving but they are definitely timid things.