Yoram Gross Director, Producer Barbara Frawley Dot Voice Joan Bruce Mother Voice Spike Milligan Mr. Platypus Voice June Salter Mrs. Platypus Voice Ross Higgins Willie Wagtail Voice Lola Brooks Voice Peter Gwynne Voice Ron Haddrick Father Voice Richard Meikle Voice George Assang Voice John Palmer Screenwriter Ethel Pedley Writer Sandra Gross Producer Bob Young Original Music Rod Hay Film Editing