A mouse was chased into a saint’s house by a cat. Seeing his plight, the saint changed the mouse into a dog. A few days later the dog ran into the saint’s house as he was being chased by a lion. Seeing this, the saint changed the dog into a lion. The lion went to the jungle and defeated the other lion and ruled the jungle A few days later he went to the saint’s house so that he could gobble him up. The saint immediately changed the lion back into a mouse and told him to never come back.
Moral: Do not bite the hand that feeds you