Paraceratherium & Skin (Season 1 Episode 22 of 25): Andy Day encounters the largest mammal to ever walk the Earth. Andy's Prehistoric Adventures airs on CBBC at 12:05 PM, Tuesday 21 May. Andy Day encounters the largest mammal to ever walk the Earth

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Mongolia , Jonny Keeling , Adam Oldroyd , Andy Day , Sam Morrison , , Prehistoric Adventures ,