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My kitten's nipples are swollen. Is this normal when she's in heat?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Female | unspayed | 10 months and 28 days old | 7 lbs

Is it normal for cats mammary glands to swell when they are in heat? My kitten Has enlarged mammaries and I want to make sure it’s because of being in heat.

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on March 29th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Yes, swelling or enlargement of the mammary glands is commonly observed when they are in heat so this is likely normal in Sarabi. No need to be concerned. Good luck and have a good night!

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