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My new puppy just arrived. Did she already have her first heat?

Updated On September 23rd, 2025

How can I tell if my puppy has had her first heat? She's not with me so I can't keep track of all that. I was kinda hoping that there was a way that I could tell.

1 Answer

Most Helpful Answer

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Answered By Destini R. Holloway, DVM

Veterinarian

Published on February 1st, 2017

Unfortunately there isn't a way to tell if your puppy for sure had her 1st heat cycle or not. You can definitely ask the people she was with to see if they noticed her bleeding and having a swollen vagina. You also may get lucky and get her on the tail end of her heat, and her vagina will still be swollen somewhat. Most pets have their first heat cycle around 6-10 months of age.

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