Q. My 12-yr old cat has sudden excessive thirst, urination and weight loss. He acts fine and does not seem to be in pain but I know something isn't right

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A. You should take your cats to your vets for clinical examination and blood test. Ideally, take a fresh urine sample with you for analysis. Excessive thirst and weight loss are very worrying symptoms. It may be due to, for example diabetes, liver or kidney failure, over-active thyroid gland or other hormonal problems, or even a tumour.

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