Arctic hippopotamus to survive the polar bear

We only have one hundred years till mankind can start experiencing life in our own Jurassic Park according to Appy Sluijs, an expert in ancient ecology at Utrecht University in the Netherlands and fossil footprints of a pantodont found on an Arctic island.:::[http://en.wikipedia.org/wiki/Pantodont]Most adult polar bear males weigh 300-600 kg (660-1320 lbs) and measure 2.4-3.0 m (7.9-10.0 ft) in