Just how smart are dolphins? Can they understand their own reflection?
Subscribe to BBC Earth: http://bit.ly/BBCEarthSubBBC Earth YouTube Channel: http://www.youtube.com/BBCEarth
BBC Earth Facebook http://www.facebook.com/bbcearth (ex-UK only)
BBC Earth Twitter http://www.twitter.com/bbcearth
Visit http://www.bbcearth.com for all the latest animal news and wildlife videos
This is a channel from BBC Worldwide, trading as BBC Studios, who help fund new BBC programmes.