It's the TikTok video that everyone's been talking about – a giant dinosaur scaring the life out of people in London.
But the giant walking dinosaur that's featured in the clip actually has links to Wales.
Over the past few weeks the video, that's had millions of views, shows the sort of thing that happens when people seem to forget that the species actually became extinct millions of years ago.
It's captured people's imagination all over the world – even a major Hollywood A-lister.
The prank was created by social influencer goubtube and Welsh company Dino4Hire.
Chris Roberts, 39, owner of the Swansea -based company, explained just how the idea all came about and told us the firm, who provide massive walking dinosaurs for hire, have actually done a few things similar to this before.
"We have done a few with some other social media influencers before," said Chris.
"It took a few days to plan everything and we filmed in London for a day.
"I saw a walking dinosaur from Japan back a few years ago.
"I looked around to get one but you could only get them in China so I managed to get hold of one and get it into the country."
The firm now have 10 different kinds of the huge replicas in different species.
Chris added: "We basically take them around schools teaching kids about dinosaurs and take them to events, for example in Cardiff Museum. It's mad.
"I know Will Smith shared it and Ladbible – it's just gone massive. We were on Good Morning Britain last week talking about it. It's gone a bit nuts."
You can find out more about Dino4Hire here .
