When does heat stop in dogs? - briefly
Heat in dogs typically lasts for about 18-21 days from the first day of estrus. However, this can vary depending on factors such as the individual dog's health and age.
When does heat stop in dogs? - in detail
Heat in dogs, commonly referred to as estrus or "being in heat," is a natural part of their reproductive cycle. The duration and frequency of heat cycles can vary depending on several factors, including breed, age, and overall health.
On average, a dog's heat cycle lasts about 18-21 days. However, this can range from 2 to 4 weeks, with smaller breeds typically having more frequent heat cycles than larger ones. The heat cycle is divided into four stages: proestrus, estrus, diestrus, and anestrus.
The first stage, proestrus, lasts about 9 days on average and is characterized by swelling of the vulva and a bloody discharge. This is when dogs are most attractive to male dogs but are not yet receptive to mating.
The second stage, estrus, or "being in heat," is the fertile period, lasting about 9 days on average. During this time, the dog's vulva may appear less swollen, and the discharge may become lighter in color. This is when most dogs are receptive to mating.
The third stage, diestrus, lasts approximately 60-90 days. During this period, the dog's body prepares for pregnancy or returns to a non-reproductive state if mating did not occur. The vulva will return to its normal size, and any discharge should stop.
The final stage, anestrus, is the period of sexual inactivity that follows diestrus. It can last anywhere from 4 to 11 months, depending on the individual dog. After this period, the cycle begins again with proestrus.
It's important to note that while some dogs may exhibit clear signs of each stage, others may show only minimal or no changes at all. Additionally, spayed females and those undergoing hormonal therapy may not experience heat cycles in the same way as intact females.
If you notice any unusual or concerning symptoms during your dog's heat cycle, such as excessive bleeding, lethargy, loss of appetite, or signs of illness, it's essential to consult with a veterinarian promptly. Regular check-ups and monitoring can help ensure your dog's overall health and well-being throughout their reproductive life.