Well, the reaction of a frightened cat isnt, by design, one that appears friendly. They usually jump and get a puffy tail. If the cat observes his reflection

Well, the reaction of a frightened cat isnt, by design, one that appears friendly. They usually jump and get a puffy tail. If the cat observes his reflection jumping and getting a puffy tail, itd make sense for the cat to assume danger, for he just ran into another cat whom got freaked out seeing him. That is, if the cat doesnt recognize itself rather quickly