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My cat has a sudden, soft, painless lump under her chin. What is it?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 2 years and 1 month old | 8 lbs

Hi! My cat has a lump under her chin that formed randomly yesterday. Its round, pretty soft, and she doesn’t really react when i touch it so i assume it isn’t painful. Im worried because it showed up out of nowhere and in my opinion its kind of large. If there is anything you can let me know about this I would really appreciate it!

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1 Answer

Most Helpful Answer

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Answered By Tomasz Wnuk

Veterinarian

Published on July 9th, 2020

Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. I suspect this is either allergic reaction or developing abscess. Please, take Sweet to your local vets for an appointment as she will likely need treatment with either antibiotics (for abscess) or anti-allergic medication (steroids or antihistamine medicine).

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