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Why did my hamster suddenly get fat? Is it serious?

Updated On September 23rd, 2025

Pet's info: Small Animal | Unknown - Small Animal | Male | unneutered | 2 years old

My hamster is fat or a sudden

1 Answer

Most Helpful Answer

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Answered By Dr. Dayna, DVM, CVA

Veterinarian, Certified Veterinary Acupuncturist

Published on January 11th, 2018

If you feel his weight has changed quickly then I would be concerned that he could have something concerning going on such as fluid in the belly, or even a tumor. Of course there is always the chance that he is just overweight. I would encourage you to have him evaluated by your veterinarian. They can let you know if they have any concerns on what they find on physical exam. Best of luck and thank you for using Pet Coach.

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