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Why is my new kitten's bum swollen, skinny, and has loose stool?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | unneutered | 1 month and 24 days old

I got my kitten today and his anus seems to be swollen. I’m not sure if I’m over reacting or it’s normal. He has loose stool and is meowing a bit but I think that’s for attention. He is quite skinny as well. No signs of bum scooting

1 Answer

Most Helpful Answer

Ann Dion, DVM

Answered By Ann Dion, DVM

Veterinarian

Published on February 17th, 2019

Hello and welcome to Petco Pet Education Center, formerly Petcoach.

The bum is a tiny bit swollen, and this could be due to diarrhea. Diarrhea could be due to worms, or food, or other problems.
I recommend getting him a good dewormer as well as flea and tick prevention (fleas often carry worm eggs).

Also, if Thanos is thin, I recommend a visit to the vet in the morning for a health check.

Best of luck with Thanos!
Vote Icon1Pet Parents found this answer helpful

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