franchise.Īs with previous documentaries in the Walking with. The two episodes stars British wildlife presenter Nigel Marven as a 'time-travelling zoologist', interacting with dinosaurs and other prehistoric creatures, a drastic change in presentation from preceding entries in the Walking with. Created by Impossible Pictures and produced by the BBC Natural History Unit, the Discovery Channel and ProSieben, The Giant Claw was first broadcast on 30 December 2002, followed by Land of Giants on 1 January 2003. Land of Giants and The Giant Claw (full titles Land of Giants: A Walking with Dinosaurs Special and The Giant Claw: A Walking with Dinosaurs Special), marketed together as Chased by Dinosaurs in the United States, are two special episodes of the nature documentary television series Walking with Dinosaurs.