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Why has my older female dog stopped going into heat? Is it normal?

Updated On September 23rd, 2025

Pet's info: Dog | Parson Russell Terrier | Female | unspayed | 6 years and 8 months old

When do female dogs stop going into heat? My dog hasn't had a season in 3 years and she's nearly 7 years.

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2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 29th, 2016

Female dogs don't actually stop having [heats](https://www.petcoach.co/article/anatomy-and-function-of-the-reproductive-system-in-dogs). This is because as they get older, they do not always show the external or behavioral signs that they are actually having a heat, this can sometimes be referred to as a ‘silent heat.' It is important to remember that even though your dog may not be showing signs of being in season that she could still get pregnant if mated by an intact male dog. Ideally, you should consider having her [spayed](https://www.petcoach.co/article/spaying-ovariohysterectomy-the-benefits-in-dogs). There may also be an undiagnosed hormonal disease or ovarian disease present that stopped her cycling. In order to make sure it is not a serious condition you should have her checked by a veterinarian. It is possible that it is a harmless reason, but it is also possible that there is a serious underlying condition.

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Other Answers

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    Answered By Andrea M. Brodie, DVM

    Veterinarian

    Published on

    At this age she should still come in season. It is possible that your dog may have had a hormonal disease or ovarian disease that stopped her cycling. In order to make sure it is not some serious condition you should have her checked by a veterinarian. It is possible that it is a harmless reason, but it is also possible that there is a serious underlying condition.

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    71Pet Parents found this answer helpful

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