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Why is my dwarf hamster losing fur and has lumps under his tail?

Updated On September 23rd, 2025

Pet's info: Small Animal | Unknown - Small Animal | Male

My dwarf hamster, ant, fur has started to disappear over time underneath his tail and there’s two little lumps what do you think is wrong?

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1 Answer

Most Helpful Answer

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Answered By Lauren Kennedy, DVM

Veterinarian

Published on May 8th, 2018

It is difficult to tell exactly from the picture you provided but I think the area you are concerned with maybe your hamsters testicles. It is normal for testicles to descend and the hair of the scrotum be thinner than the hair on the rest of the body. Depending on the age of your hamster this could be what is going on. If you would like to post another question or do a consult we may be able to help you further with what is going on. Alternatively, you could take Ant in to be examined by your veterinarian to make sure there is nothing to worry about. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach.

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