I Say Let The Twin In

A woman thought her cat had escaped and lured him back inside with treats. When she turned around she saw two identical cats. There was nothing wrong with her vision, the one she'd let in was a doppelganger stray.

"now my (actual) cat spends HOURS every day with his nose pressed against the window or screen door and the twin cat on the other side and they just hold their paws out to one another and sit there mournfully"

Via The Queen is not Amused...but I am.