08:28World of HappyEpisode 3: The Dog MachineCBBC Duration: 5 minutes Sat 3rd Apr 2010, 08:28 on CBBC ChannelShort animation. The hapless dogs put some softness back into their world.ContributorsNarrator:Geoffrey PalmerProducer:Emma StrainExecutive Producer:Jo SargentWriter:Giles AndreaeGenresChildren'sSeriesWorld of Happy Source: BBC Online