The global edition of BBC iPlayer has launched on iPad - http://bit.ly/qJTCsU  Download the free app today and enjoy taster clips and episodes! Watch a selection of the best classic and contemporary British shows on demand, including full length episodes of Deadly 60. Steve Blackshall and his team head to South Africa and get up close and personal with a Rinkhal - a venon-spitting cobra snake with a rather unique defence mechanism. Visit http://www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here: http://www.youtube.com/bbcearth