A woman brought her very limp duck into the veterinary clinic, placing it gently on the table. The vet listened to the bird's chest with his stethoscope, then shook his head and said, "I'm sorry, your duck, Cuddles, has passed away." The woman, clearly distressed, asked, "Are you sure?"

"Yes, I'm sure," the vet replied. "Your duck is dead."

The woman protested, "But how can you be so certain? You haven't done any tests. He could just be in a coma!"

The vet rolled his eyes, turned around, and left the room. A few moments later, he returned with a black Labrador Retriever. The dog stood on its hind legs, sniffed the duck from top to bottom, and looked up at the vet with sad eyes, shaking its head. The vet nodded, patted the dog, and left. A few minutes later, he came back with a cat. The cat sniffed the duck, sat up, shook its head, meowed softly, and walked out of the room.

The vet turned to the woman and said, "As I said, 100% certifiably, your duck is dead."

He sat down at his computer, typed something, and handed her a bill. Shocked, the woman exclaimed, "This is $150! Just to tell me my duck is dead?"

The vet shrugged. "Well, if you'd just taken my word for it, the bill would’ve been $20. But with the Lab Report and the Cat Scan, it’s $150."