Once a dog found a piece of bone lying on the ground. He immediately picked it up

Once a dog found a piece of bone lying on the ground.
He immediately picked it up

and walked away in search of a lonely spot to eat it.

On his way he passed a stream. As he was walking over the wooden bridge to
cross the stream,
he saw his own reflection in the water. He thought it was another dog

with a similar bone in his mouth.

The dog was very greedy.

He wanted to take that bone also. He began to bark and the bone

fell from his open mouth into the stream below. The dog lost the bone he had because of his greed.