The dog and His shadow.

A hungry dog was wandering in search of food. He found a bone. He put it in his mouth and was going home. On the way, he had to cross a plank across a stream. He began to cross the plank. He looked down into the stream and saw his own reflection on the water. He thought it was another dog with a bone in his mouth. The greedy dog wanted to snatch the bone from the other dog. For this purpose, he opened his mouth. But the bone he was carrying fell into the stream. The greedy dog lost even what he had.