A man brought a very limp dog into the veterinary clinic.
 
After he laid the dog on the table, the doctor pulled out a stethoscope, placing the receptor on the dog's chest. After a moment or two, the vet 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 vet turned and left the room. In a few moments, he returned with a Labrador Retriever. The Retriever went right to work, checking the poor dead dog out thoroughly. After a considerable amount of sniffing, the Retriever sadly shook his head and walked out.
 
The veterinarian then left the room again and returned in a few moments with a Siamese cat, who also carefully checked out the poor dog on the table. As had his predecessor, the cat sadly shook his head, jumped off the table and ran out of the room.
 
The veterinarian handed the man a bill for $600. The dog's owner went wild. "$600! Just to tell me my dog is dead? Why, this is outrageous!"
 
The vet shook his head slowly and explained. "If you had taken my word for it, it would have cost $50, but with the Lab work and the cat scan....