A dog once had a nice piece of meat for his dinner. He was walking along with the meat in his month, as happy as a King.
On his way home there was a stream. The dog stopped to look into the calm, clear water. What did the dog see in the water?
He saw a dog looking up at him! This dog looked the same as our happy little dog, and even had a similar piece of meat in its mouth! "I'll try to get that meat too," said the dog.
But as soon as he tried to bit the new piece of meat, his own meat fell out of his mouth and into the stream!
Then he saw that the other dog in hte water had lost his piece too. He went sadly home. That day he only had his dreams to eat.
Lesson: Be careful of losing something you have for something that may not exist.