|A man takes his sick Chihuahua to the veterinarian. They're immediately taken back to a room.
Soon, a Labrador walks in, sniffs the Chihuahua for 10 minutes and leaves. Then a cat comes in, stares at the Chihuahua for 10 minutes and leaves. Finally, the doctor comes in, prescribes some medicine and hands the man a $250 bill.
`This must be a mistake,` the man says. `I've been here only 20 minutes!`
`No mistake,` the doctor says. `It's $100 for the lab test, $100 for the cat scan and $50 for the medicine.`