The British writer Hector Hugh Munro (1870–1916) wrote his many clever short stories under the pen name Saki. Among Saki’s stories is “Tobermory,” whose title character is a cat who can talk.
Some of the human characters tease Tobermory about his having an affair with a lady cat who lives at the stable. Then it dawns on them that the cat, climbing around in windowsills as cats are inclined to do, is all too aware of their affairs.