Once upon a time there was a farmer with lots of sheep. One day the farmer's neighbor gave him his dog as a gift. But this wasn't an ordinary dog. It was a wolf dog.
"Take this," his neighbor said.
"Why thank you," the farmer said. But every night the dog kept changing into a wolf and ate the farmer's sheep every night.
But one night, a baby sheep got stuck in the wolf's throat. The next morning the farmer saw the bulge and asked the wolf what was wrong. The wolf told him it was nothing. The farmer stayed with him and gave him medicine.
Then the wolf coughed the baby sheep out. Then the farmer said, "How could you? I took care of you well. How could you trick me?
The wolf said, "I am very sorry, but I am not a dog. I am a wolf." But the farmer showed no mercy and the next day, he killed the wolf.