Sir David Attenborough watched two dinosaurs have sex on his new show.

Sir David Attenborough was shocked to see how realistic the dinosaurs were on Prehistoric Planet

Sir David Attenborough was shocked to see how realistic the dinosaurs were on Prehistoric Planet

The ‘Prehistoric Planet’ narrator stopped recording the Apple TV+ show to be “a voyeur” to the “extraordinary” recreation of two Tyrannosaurus rexes mating.

According to Mike Gunton, the series’ producer, the 96-year-old environmental activist “was recording the commentary, but took his headphones and glasses off and leant forward".

Mike added to the Radio Times magazine: “He said, ‘You know, Mike, watching these two T-rex courting was like watching them with a pair of binoculars. I felt I was there. It was utterly, utterly extraordinary – every element of that behaviour was perfect.' "

David believes the new nature series - which is dropping on the streaming service on May 23 - will blow audiences' minds as it shows them dinosaurs they’ve never seen before, such as the quetzalcoatlus and masiakasaurus.

He said: “Sharing my passion for the natural world is something I have done for many years using different technologies, from the first days of black-and-white television, to colour, HD, 3D, 4K and now using the most advanced CGI animation to bring these incredible animals to life on our screens.

“I hope it will inspire in our audience the same fascination that it does in me.”

The five-part series - which is also being brought to life by Jon Favreau and Tim Walker, with a score by Hans Zimmer - is being billed as a programme that “will transport viewers 66 million years in the past to discover our world - and the dinosaurs that roamed it - all in stunning detail”.