ox and a selfish dog
A farmer had an ox and a dog. The ox helped him in his fields and the dog watched the house at night.
One evening the ox returned home very tired. He was very hungry He went to the manger to eat hay. But he found the dog sitting on it.
The dog barked at him and would not let him eat it. The ox said to the dog, "Please, get aside and let me eat the hay. It is of no use to you."
But the4H natured dog replied, "Since I myself cannot eat the hay. I will not let anyone else have it." So the ox had to go hungry that day.
There are some selfish people in the world also. They would not let others have what they themselves cannot get. They follow the "Dog in the Manger Policy."