Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Nov 21, 2007
Dino Death Trap: Scientists study present-day animals in attempt to answer the question: what super-sized the dinosaurs? ➡ Subscribe: http://bit.ly/NatGeoSubscribe
About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.