This could be potentially serious and she needs to see the vet. If she is not eating and is in a 'crouched' or 'huddled' position, she is in pain. I can't speculate as to what the cause of the discomfort is, but she may have an obstruction which is causing the 'whistling' sound when she breathes or a bronchial infection. I would get your girl to the vet no later than tomorrow morning.
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Lori McLaughlin
Your veterinarian should ALWAYS be consulted first and foremost when your pet's welfare is at stake.
