Q. I have an older cat who is very skinny. She is still active but her lack of muscle worries me. What could be causing it ?
A. Weight loss can be normal in older cats. However, if it is a very sudden process it is likely to be due to pathology. There are several diseases that lead to weight loss in cats, for example diabetes, over-active thyroid gland or other hormonal imbalances, kidney or liver failure or even a tumor. I would advise you to take your cat to your vets for examination and a blood test to find out what is going on with your kitty. If you take a fresh urine sample with you it may help to establish diagnosis.