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LONDON - MARCH 18:  An adult Tyrannosaurs Rex robotic dinosaur performs in the O2 arena ahead of the forthcoming European leg of the live show 'Walking With Dinosaurs' on March 18, 2009 in London, England. The live arena show, which has already toured throughout North America, tours the UK from July 2009. The £10 million show features 15 mechanical life-sized dinosaurs and is based upon the hit BBC TV series of the same name.  (Photo by Oli Scarff/Getty Images)
LONDON - MARCH 18:  An adult Tyrannosaurs Rex robotic dinosaur performs in the O2 arena ahead of the forthcoming European leg of the live show 'Walking With Dinosaurs' on March 18, 2009 in London, England. The live arena show, which has already toured throughout North America, tours the UK from July 2009. The £10 million show features 15 mechanical life-sized dinosaurs and is based upon the hit BBC TV series of the same name.  (Photo by Oli Scarff/Getty Images)

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Study suggests T. rex couldn't run

According to this study's computer simulation the T. rex may not have been as agile as movies like "Jurassic Park" have suggested.

Study suggests T. rex couldn't run

According to this study's computer simulation the T. rex may not have been as agile as movies like "Jurassic Park" have suggested.