May 10, 2026, 10:18 am | Read time: 3 minutes
Many dog owners are familiar with the typical questions about their pet’s health and behavior. But as the female dog ages, a particularly interesting question arises: Does she experience something similar to menopause in humans, or is it entirely different for dogs? The answer is less obvious than it initially seems.
Is “menopause” even the right term for female dogs?
In humans, menopause describes the last menstrual period in a woman’s life. The so-called menopause–medically known as climacteric–encompasses a longer period during which hormone levels change and the production of estrogen and progesterone decreases. At the end of this phase, fertility ends permanently.
However, this clear distinction cannot be directly applied to dogs. While female dogs also age hormonally, they do not experience a comparable end to their reproductive ability.1
Dogs and Their Reproductive Cycle
Female dogs reach sexual maturity between 6 and 24 months, varying greatly by breed. It is said that the smaller the dog, the earlier it reaches puberty. The frequency of reproductive cycles also depends on the breed and age. Typically, a female dog goes into heat every six to seven months, but this can vary significantly. Some breeds, such as the Basenji, go into heat only once a year.
During the reproductive cycle, which lasts about 4–8 weeks, the dog goes through several phases, with the proestrus and estrus phases referred to as “heat.” Before the so-called standing days, when the female is fertile, there is a slight bloody discharge meant to attract males, as the female can only become pregnant during 9 to 21 days. If the female is not mated during these fertile days and her mature eggs remain unfertilized, the thickened uterine lining is not shed as in humans but gradually recedes. Therefore, a female dog does not menstruate and does not experience menopause as understood in humans.2
Also interesting: When is a dog actually considered a senior?
Recognizing and Alleviating When Cats are in Heat
Why Isn’t My Female Dog Going Into Heat?
So Do Female Dogs Not Experience Menopause at All?
If a female dog is older than seven years, the decrease in sex hormones may result in her going into heat only once a year. However, she generally remains fertile until the end of her life. As she ages, she also becomes physically weaker. Therefore, an older female dog should not be expected to carry a pregnancy. Hormonal changes often cause the body to act erratically, leading to increased general fatigue, lethargy, hair loss, or weight changes.3
If a female dog’s heat cycle completely stops, it may be due to ovarian dysfunction or other conditions, such as hypothyroidism or adrenal hyperfunction. In such cases, it is advisable to have your dog examined by a veterinarian for safety.
How Can the Stress of a Lifetime of Heat Cycles Be Avoided?
With spaying, a female dog can no longer go into heat and thus cannot become pregnant. Sterilization works differently; the dog will not become pregnant but will continue to experience hormonal cycles. The benefits of spaying include a significant reduction in the risk of certain cancers, such as cervical cancer. However, spayed female dogs tend to gain weight and are more prone to urinary incontinence as they age.
By the way, most animals do not experience classic menopause, including cats, which can still give birth twice a year at 15 years old. Besides humans, there are four whale species that go through menopause: orcas, short-finned pilot whales, narwhals, and belugas. Like humans, they lose their fertility but continue to live in their social groups and take care of the young as “grandmothers.”4