I brought a mirror today and left it propped up against the wall Cleo was fascinated with her own reflection - she seemed to know it wasn't another cat - well no reaction but she was interested.
I have since remembered the when they were tiny they saw their reflections and panic ensued the more Oscar tried to "scare off" the rival cat (himself) the more the rival cat made the same moves.
Cleo went frantic trying to get at the "rival cats" but everytime she went behind to get them they'd gone then they jumped out at her again when she came back to the front of the mirror
They must have been about 8-9 months old then as I was moving the removal men thought they were hilarious.
Has your cat ever seen their reflection and what was the result?
Karen