There is a dog who is very happy to eat eggs. The dog often goes into the chicken coop and greedily swallows chicken eggs round.
One day, the dog walks along the beach. The dog sees an oyster, and in an instant the Dog swallows round oysters he thinks are eggs.
Not long afterwards, as we thought, the Dog felt a great pain in his stomach. "I finally understood that not all round objects are eggs," he said, groaning in pain.
So the learning that we can emulate from this dog and oyster tale is Acting too hastily will lead to something bad.