Gnasher finds a Gnashersaurus rex thigh bone while digging in Beanotown Park! A long-lost relative! It's not long before Walter and Dr Pfoofleffer hatch a plan to create a whole new living dinosaur from the bone! Dennis and his pals must save Gnasher's ancestor and hide him in a place where no-one will notice a fully grown dinosaur...
Series 1: 38. Bertie's Backbone
Dennis and the gang train Bertie in the art of standing up to people so he can rebel against Walter's bossiness - but they train him too well and he becomes a dangerous reb ...
Series 1: 37. Grizzly's Great Outdoors
A snake bite causes Grizzly Griller to forget all his survival know-how, so it's down to his greatest fan Dennis to help him re-learn his survival skills and help them all ...