A lady awoke one morning and discovered her dog was not moving. She
 called her vet who asked her to bring the dog in. After a brief
 examination, the vet pronounced the dog dead.
   "Are you sure?", the distraught woman asked. "He was a great family
 pet. Isn't there anything else you can do?"
   The vet paused for a moment and said, "There is one more thing we
 can do."He left the room for a moment and came back carrying a large
 cage with a cat in it. The vet opened the cage door and the cat walked
 over to the dog. The cat sniffed the dog from head to toe and walked
 back to the cage.
    "Well, that confirms it." the vet announced. "Your dog is dead."
   Satisfied that the vet had done everything he possibly could, the
 woman sighed, "How much do I owe you?"
   "That will be $330." the vet replied.
  "I don't believe it!", screamed the woman. "What did you do that cost
   "Well", the vet replied, "it's $30 for the office visit and $300 for
 the cat scan."