This series followed the original series, Tales of the Riverbank, which ran in the 1960's. Some changes were made to characters due to U.S. distributors concerned about what the original names might connote to some viewers. Most notably, the main character, Roderick Rat, became Matthew Mouse. Hammy's sidekick, Guinea Pig, became simply G.P. Real animals were used in the filming of the show, with all voices performed by Paul Sutherland. However, since these animals were not trained, some of their random actions had to be covered over with sometimes nonsense dialogue.