My spayed kitten has enlarged, soft breasts, but no lumps. Why?
Updated On September 23rd, 2025
Pet's info: Cat | Mixed Breed | Female | spayed | 9 months and 17 days old | 9 lbs
Hi! My friend’s kitten who’s almost one and fixed, we noticed that she has enlarged breasts, no redness or tender to touch, they are really soft and no lumps at all, what can this be?
2 Answers
Most Helpful Answer
Published on April 18th, 2018
Hi, thanks for using Petco Pet Education Center, formerly Petcoach! It is likely mammary gland hyperplasia which is benign growth of the breast tissue in cats. It can happen after the cat is spayed if they ovulated and were recently in heat before the surgery. It is secondary to hormonal influence. It should resolve on it's own. I hope this helps!
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on August 31st, 2017
I am not able to appreciate any lumpiness in the mammary glands, but since it is a new development, you may want to have it checked out by a vet. Sometimes increased size in mammary glands can be seen in the first few days after a cat is spayed, which does not seem like the case in this situation. Try to avoid massaging or touching this area to reduce stimulation until you are able to get Lulu seen by a vet.
1Pet Parents found this answer helpful
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