A wave of AI-generated images depicting Dr. Seuss's Cat in the Hat as a knife-wielding stalker prowling residential streets has spent the past several weeks forcing police departments across Ireland and Britain to do something unusual: publicly confirm that a fictional children's book character is not, in fact, terrorizing their towns.
The trend began in Ireland in mid-to-late August, with fabricated photos and videos showing a menacing, human-sized version of the character, based on the look from Mike Myers' 2003 film, peering through windows, standing on driveways and lurking on rooftops at night. Gardaí in Wexford were among the first to respond publicly, issuing a statement that read, in part, according to PetaPixel's report on the debunking:
The Cat in the Hat was not in your driveway while you were out.
Wexford Garda Síochána
A hoax that outran its own punchline
What began as an apparent internet joke spread faster than the debunkings could keep pace, with claimed sightings soon reported across English cities including Manchester, Newcastle, Leeds and Blackpool, per the Irish Examiner's coverage of the trend's spread. South Yorkshire Police eventually joined in with their own dry statement, noting they had received no reports of the Cat or "his associates, Thing One and Thing Two."
The images and clips are almost all generated or altered with AI tools, often by inserting the character into otherwise real, mundane street-view photography to heighten the sense that the sighting is genuine. That realism has had real consequences: reporting on the trend's spread described residents, including at least one teenager, becoming frightened enough by the videos to seek reassurance from family in the middle of the night.
Officials on both sides of the Irish Sea have used the episode to repeat familiar advice: verify unusual claims against official police accounts before sharing them, and treat any invitation to meet a stranger at a secluded location, cat costume or otherwise, as a warning sign rather than a punchline. Police note the trend echoes a similar 2025 hoax involving AI-generated images of homeless men supposedly found inside family homes, suggesting the format, real streets, fake threat, manufactured panic, is becoming a recurring feature of the AI image era rather than a one-off prank.