A man brought a very limp dog into the veterinary clinic. As he laid the dog on the table, the doctor pulled out his stethoscope, and placed the receptor on the dog's chest. After a moment or two, he shook his head sadly and said, "I'm sorry, but your dog has passed away."

"What?" screamed the man. "How can you tell? You haven't done any testing on him or anything. I want another opinion!"

With that, the doctor turned and left the room. In a few moments he returned with a Labrador Retriever. The Retriever went right to work, sniffing the poor dog on the table and checking him out thoroughly. After considerable sniffing, the Retriever sadly shook his head and said, "Woof."

The veterinarian then took the Labrador out and returned in a few moments with a cat. The cat walked around the poor dog several times and then sadly shook his head and said, "Meow." He then jumped off the table and ran out of the room.

The veterinarian said, "There's nothing more I can do," and handed the man a bill for $600. The dog's owner went ballistic.

"$600! just to tell me my dog is dead? This is outrageous!"

The doctor shook his head sadly and explained, "If you had taken my word for it, the cost would have been $50, but with the Lab work and the Catscan, the bill just kept adding up.