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Why is my cat losing weight, always hungry, and acting aggressive?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 4 years and 6 months old

My cat seems to be losing wait and has been extremely hungry he also has been a little bit cranky and seems to be scratching and biting but has no sign of fleas as he is treated he does share an outside area with raccoons that frequent are yard also he seems to not be drinking water very much

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1 Answer

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Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on December 21st, 2018

Loss of weight and increased appetite are often a sign of a condition called hyperthyroidism, this could be caused by other conditions as well such as Lymphoma, IBD and intestinal worms for example. i strongly recommend taking him to your vet to get it checked and treated.

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