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Why is my hamster's anus swollen, black, and urine smells awful?

Updated On September 23rd, 2025

Pet's info: Small Animal | Hamster | Male | 1 year and 1 month old

I have a Teddy bear hamster, he was a class pet given to my 4 year old autistic son. We recently noticed that Teddy's anus is swollen and black, and when he urinates it smell more awful then before. I have not notice any diarrhea, just that his butt is black and swollen. And if I have to take him to the vet, any recommendations?

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1 Answer

Most Helpful Answer

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Answered By Todd Cecil

Veterinarian

Published on November 18th, 2018

Thanks for reaching out about Teddy and including pictures. It would be concerning that this would be an peri-anal abscess or obstruction. A veterinary visit is recommended, for tomorrow. The urine might smell worse because of a urinary tract infection or concentrated due to lack of drinking. Good luck with the veterinary visit.

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