Voir Rex the Runt, Series 2 - Episode 8

Having conned Rex into giving away his own ear, Dr Dogg carries out illicit genetic experiments on it and discovers the Plasticene Gene. In search of retribution, and Rex's ear, the gang pay Dr Dogg a visit. Dr Dog genetically engineers Rex a new ear, but, as a side-effect, Rex is covered in blue fur and worse still, the whole place is filled with clones of Vince.