A man, carrying a very limp dog, entered the veterinary clinic. As he lay the dog on the table, the vet took out his stethoscope and placed the receptor on the dog's chest.
He listened for a moment or two, shook his head sadly and said, "I'm sorry, sir, but your dog has passed away."
"What?" screamed the man. "How can you tell? You haven't even done any tests on him. I demand a second opinion!"
With that, the vet turned and left the room, returning a few moments later with a Labrador Retriever. The Retriever went right to work and checked the poor dead dog out thoroughly. After a considerable amount of sniffing, the Retriever sadly shook its head and barked.
The vet then took the dog out and returned a few moments later with a cat, who also checked out the poor dog on the table.
As had his predecessors, the cat sadly shook its head, meowed, jumped off the table and ran out of the room.
The vet handed the man a bill for $650. The dog's owner went postal and screamed, "$650! Just to tell me my dog's dead! This is outrageous!"
The vet shook his head sadly and explained, "Sir, had you taken my word for it, the cost would have been $50, but with the lab work and the cat scan....."