A woman took her dog to the vet "Doctor," she said, "I think my dog is dead."

The doctor laid the dog on the table and reached down and took a cat out of a box. The cat walked all over the dog and the dog didn't move.

"Yes, your dog is dead," said the doctor.

"How much do I owe you?" the lady asked, tearfully.

"$345," said the doctor.

"$345," the lady cried, "That's absurd!"

"Yes, well... it's $45 for the office visit but $300 for the cat scan."