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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?

1 Answer

Most Helpful Answer

Todd Cecil

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.
Vote Icon3Pet Parents found this answer helpful

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