A woman took her pet bird, which had a bad cough, to see the vet. The vet listened to the bird’s cough and agreed that it sounded bad but told the woman that the bird was not sick. Why not?
The woman bought this parrot from a pet shop. When she got it home, it developed a bad cough. When the vet said there was nothing wrong, she investigated its history and found that the parrot had previously been the pet in a home for the elderly. There, it had learned to copy the heavy coughs of some patients.
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