cats

My cats a senior cat who's always seemed to take issue with other cats, particularly in his house.

However, I've found out recently that there's another neighbourhood cat that's been snooping around and stealing his leftover food that he hasn't finished.

I was sitting around on my off day with my cat on the other side of the room when this Siamese cat saunters and makes eye contact with him. I get up assuming this cat is about to antagonise my cat and the Siamese just bolts. I go after it to see that it leaves and once it scarpers out the window I go back downstairs to my cat who hasn't even moved lol.

All of a sudden I feel like maybe ive just chased off one of his mates and feel just a little bad over it lol but I'm really not sure what to think now.

My cat is quite elderly so some part of me thinks he's just intimidated and no longer bothered with defending his territory but then neither of then seemed that bothered by the interaction at the time.

My cat hasn't had any injuries from this cat but I still can't be sure they're not fighting.

Just kind of at a loss at this point lol. Any advice?

Cheers!

My cat BTW! Haven't got a PIC of the Siamese yet. First time I saw him today!