Sorry if you've heard this one before.
A lady took her parrot to the vet saying she didn't know what was wrong with it. The vet took one look and said "I'm afraid your parrot is dead". The lady looked at the parrot lying on the table and told him she didn't believe him and wanted a second opinion.
The vet went out the door and came back with a Labrador, which looked at the parrot, niffed it and then went out again. The vet said, "there you go - it's definitely dead". The owner said she was sure it wasn't and what did that prove? She wanted another opinion; maybe it was just stunned.
So the vet went away and came back with a big ginger cat, which sniffed the parrot, pawed it twice, jumped off the table and stalked off. The vet said "that proves it - the parrot is dead".
The parrot still hadn't moved, so the lady said "Ok, I believe you. How much do I owe you?" The vet said " that'll be £200 please". She was astounded and asked why it was so much.
The vet replied " well, there was my time, and then the lab report and the cat scan..."