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My cat has a sore nipple lump. Is it from nursing kittens or a tumor?

Updated On September 23rd, 2025

Pet's info: Cat | Bombay | Female | spayed | 1 year and 3 months old | 8.3 lbs

We have cat named Luna who is around 2 years old. A couple weeks ago we got sole kittens to foster and they have been nursing on Luna. I have been stopping this but last night I had found a lump on one of her nipples. I don't know if one of the kittens bit her while nursing. But I can't help but worry that it is a tumor. It is Wars to the touch and Luna doesn't like it being messed with. Is it just because of the kittens, or is it a tumor?

1 Answer

Most Helpful Answer

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Answered By Sarah Derksen, DVM

Veterinarian

Published on June 6th, 2017

Hi there. This could be a type of bite, abscess, or a tumor. SHe is fairly young for a tumor, but it has to be on the list. A sample and examination of the mass is needed to find which is the cause.

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