What’s wrong with an old cat who has lost eight pounds in three weeks?
Any cat that shows a sudden and severe weight loss should be tested for abnormalities of the thyroid gland, for diabetes, and for kidney disease. If your veterinarian has not yet performed a geriatric blood profile and urinalysis on your cat recently, then you should request that it be done immediately. There are many conditions that are very treatable in older cats if they are diagnosed in time and treated aggressively.
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