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My hamster gained weight, has a round belly, and bloody urine. Why?

Updated On September 23rd, 2025

Pet's info: Small Animal | Hamster | Female | unspayed | 0.0812 lbs

My 1.5 yr old Djungarian dwarf hamster has gained weight very quickly and seems very round in her abdomen area. She also has one eye that seems like it can’t be completely opened. Yesterday there was some red in her urine, but I haven’t noticed it again today. Otherwise, she is acting normal. I’m not completely sure what to do for her since she is acting normal

1 Answer

Most Helpful Answer

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Answered By Todd Cecil

Veterinarian

Published on October 9th, 2019

Thanks for reaching out about Auggie. With intermittent blood in the urine and a swollen abdomen, uterine enlargement, (probably cancer) is likely. Hamsters are induced ovulators and are constantly in heat, therefore estrogen. High sustained levels of estrogen can lead to uterine neoplasia. A veterinary visit is recommended to assess and provide a diagnostic/treatment plan. Most likely, she needs to be spayed. If not going forward with that, palliative medications for pain are recommended. Good luck.

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