Interesting questions! When Ally was a kitten, and she would run into my bedroom, she would jump sideways and get a real fright when she saw herself reflected in the mirror on the wardrobe. But then she got used to it, and now she doesn't bother. I don't know if she realises it is herself, but she doesn;t want to fight it anymore.

Connor will sit and stare at his reflection in the mirror for a long time (but he gets easily confused, often sitting in the middle of the house and screaming as if he is lost until someone comes and "finds" him, so I am not sure what he thinks it is! (unfortunately we think he may have some minor brain-damage from being abused - sometimes his eyes look very unfocussed, and he sometimes seems to "forget"where he is)