Bear Behaving Badly

When Nev and Keith discover a 'prehysterical' Blue Bearasaurus frozen in time in an ice block at Mr Prank's, they set about making him their friend. But when the cave-bear goes on the rampage, confusing Aunt Barbara for a woolly mammoth and making Prank's bear allergy twice as bad as usual, the pair hatch a plan to send him back in time.