AI ‘Cat in the Hat’ sightings spark fear and police warnings across UK and Ireland

Police forces across the UK and Ireland have responded to a viral online trend featuring AI-generated images and videos of Dr Seuss’s famous Cat in the Hat character appearing in streets, car parks, and residential areas. The posts, which have been viewed by millions, show the character from the 2003 film adaptation starring Mike Myers in various unsettling poses — walking along roads, crouching on cars, and peering into windows. Many are captioned with warnings such as “lock your doors Sheffield / Manchester” or “spotted Whitby.”

However, authorities have been quick to confirm that the images and videos are not real. A South Yorkshire Police spokesperson told The Independent: “To confirm, we have not had any reports of a cat in a hat in Meadowhall, or anywhere else in South Yorkshire for that matter. We can also confirm no recent sightings of his associates Thing One and Thing Two. On a serious note, if you do see posts online providing policing updates and advice, please check that they are from an official policing account. The cat is not out of the hat on this one... we don't have a new account or a new logo. Please don't believe everything you read on social media.”

A fake statement, supposedly from South Yorkshire Police, had circulated on TikTok claiming officers were “aware of a number of reports regarding a suspicious figure described as a ‘cat in the hat’ seen walking in the Meadowhall area.” Similar debunking statements have been issued by police in Wexford, Glasgow, Dublin, and Limerick. Wexford Garda said: “In an unusual turn of events we are hearing a lot about an illusive Dr Seuss character doing the rounds online, apparently causing havoc in neighbourhoods and towns across the country. Fortunately, we can rule out the issue, which is essentially an AI prompt that places the character into images and videos of familiar places. To be clear, the Cat in the Hat was not in your driveway while you were out.”

Despite the official clarifications, the trend has caused real alarm. The BBC reported that some teenagers have decided not to go out at night because of the rumours. Skye, aged 16, told The Independent: “I was having a sleepover but everyone started watching Cat in the Hat videos. It was 3am. I wanted to go home. When I started walking down my friends' driveway, I got totally freaked out that the Cat in the Hat was going to jump out. I had to call my mum to pick me up.” Another teenager, 14-year-old Lily, said she had heard that the Cat in the Hat had arranged a “meet and greet” in the woods in Galashiels, but added: “You are not going to meet anyone.”

Some of the viral posts have taken a darker turn. A Facebook post asks users if they have seen the “killer Cat in the Hat,” and another video shows the character chasing a person down a street. Unverified claims have also circulated, without evidence, that the character has been involved in violent assaults. One TikTok post showing someone in a Cat in the Hat costume with the caption “What should I do?” has amassed 14.6 million views in three weeks. Comments on such posts include conspiracy theories about Mike Myers being trapped inside the costume, and users zooming in on parts of the outfit.

A separate trend has emerged of real people dressing up as the Cat in the Hat and posting videos with captions like “Kent I'm coming. lock your doors.” One account, set up this week, has posted videos of a person in costume dancing, prompting other users to share them with added locations across the UK.

While much of the reaction has been humorous — many videos are clearly comedic — the trend has also prompted broader concerns about the spread of AI-generated misinformation. The Independent noted that the craze comes amid a more dangerous trend of wrong-way driving videos, and reported that Defence Minister Luke Pollard has called on social media companies to remove content showing such behaviour. That connection is not made in all coverage, but the context of viral online challenges is present in some reports.

The Tab, in its coverage, compared the phenomenon to the 2016 “killer clown” scare and noted that police in Wexford had confirmed the images were AI-generated. That article also carried a slightly mocking tone, suggesting the trend was “a sad statement on where we’re at culturally” and criticising humans for copying AI-generated content.

The trend appears to have been partly inspired by the auction of the original Cat in the Hat costume from the 2003 film earlier this month, which was sold as part of a 1,400-piece lot and was predicted to fetch up to $24,000. The Tab reported that the auction had taken place, while The Independent noted the costume’s sale as part of the background to the viral posts.

Police have urged the public to remain sceptical of online posts and to verify any policing updates through official channels. South Yorkshire Police’s spokesperson added: “Please don't believe everything you read on social media.”

Perspectives

  • Police and officials: Emphasise that the images are AI-generated and fake, and urge the public to check the authenticity of any policing updates online.
  • Teenagers and parents: Express genuine fear and disruption, with some young people avoiding going out at night because of the rumours.
  • Social media users and commentators: Treat the trend largely as entertainment, with many sharing comedic videos and memes, though some also spread unverified claims.
  • Media coverage: Varies in tone, with some outlets framing the story as a serious misinformation issue, while others approach it with humour and cultural criticism.