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Why does my unspayed female kitten have lumps under her nipples?

Updated On September 23rd, 2025

My female kitten born March 27 has oval quarter sized lumps under three of her nipples. Not yet spayed. No change in behavior, still active. Doesn’t seem in pain when you touch them. Any idea what this could be?

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on July 18th, 2018

My guess is that it is just hormone related hyperplasia. The other option is mastitis - it may be just starting. I would just keep an eye on it since she is acting otherwise normal. If after a couple weeks they lumps are still present you should have her examined by your vet. Hope this helps. Best wishes.

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