Do Cats Dream?

Watch a sleeping cat twitch its tail, flick its whiskers, or give a soft chatter, and you are seeing dreams in action. All mammals share REM sleep, the stage where dreams happen, and cats are no exception. They likely dream of the day's events, perhaps hunting, and yes, they can have nightmares too. Best not to wake a dreaming cat, as a sudden startle can lead to an accidental scratch.