15:25World of HappyEpisode 4: The Dance of Wallowy BignessCBBC Duration: 5 minutes Mon 29th Mar 2010, 15:25 on CBBC ChannelShort animation. The wobbly hippo finds her inner groove.ContributorsNarrator:Geoffrey PalmerProducer:Emma StrainExecutive Producer:Jo SargentWriter:Giles AndreaeGenresChildren'sFormatsAnimationSeriesWorld of Happy Source: BBC Online