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Why are there red blotches on my dog's nipples after her first heat?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Female | unspayed | 1 year old | 3 lbs

1 year old Female Unspayed Maltese has bright red blotches around her 2 lower nipples. Has been in heat for the first time a week ago. Never is around other dogs or cats, uses pee pad indoors 90% of the time. No new food. What could be going on?

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on December 14th, 2016

a higher hormone activity level such as during heat can indeed make the mammary complexes get more blood supply in preparation for a possible pregnancy. This should go away a little while after coming out of estrus (estrus = heat, and your dog is in heat for about three weeks after she stops bleeding. If the redness does not subside, or if the skin starts to look diseased, you should have your vet give Fufu a skin exam.

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