This is unusual for any cat and is a RED FLAG in veterinary medicine. You need to have your cat seen tomorrow at a vet. They will need to run some bloodwork and check the urine.
One of the most common causes of this is diabetes, so please schedule him to go in as soon as possible.
Let me know if you have further questions.
Dr.V
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Dr. D.A. Vamvakias
Veterinarian
