谁欠谁的钱

A lawyer's dog, running about unleashed, beelines for a butcher shop and steals a roast. Butcher goes to lawyer's office and asks, "If a dog running unleashed steals a piece of meat from my store, do I have a right to demand payment for the meat from the dog's owner?" The lawyer answers, "Absolutely." "Then you owe me $8.50. Your dog was loose and stole a roast from me today." The lawyer, without a word, writes the butcher a check for $8.50. Several days later, the butcher opens the mail and finds an envelope from the lawyer: $250 due for a consultation.