A Bone In the Mouth is Worth How Many In The Water?

The dog looked down into the water and saw his reflection. He thought it was another dog with a bone in his mouth-- and it seemed to him that the other dog's bone was bigger than his. He decided that he was going to take the other dog's bone away and opened his mouth to attack. The result was that his own bone fell into the water and was lost.
http://www.realclearpolitics.com/articles/2009/09/15/fables_for_adults_98314.html