Documentary National Geographic - Discover creatures that seem fiction: the biggest insect that has ever lived, largest flying bird of all time, a mega mammal . National Geographic - Biggest Dinosaur Ever & More - WHEN THE EARTH WAS A LAND OF GIANTS. DOCUMENTARY ZERO DAYS - DOCUMENTARY MOVIES ON NETFLIX 2016: DOCUMENTARIES KING TUT - DOCU GANGSTER. Programme website: David Attenborough meets the biggest animal ever to walk on Earth, in 360 - a Titanosaur. Produced by the BBC .
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