How long does a dog's heat cycle last?

The dog's heat cycle is a normal occurrence, and it usually lasts between 5 and 12 days, with some cases lasting up to 21 days. The initial color of the bleeding is relatively dark, and the amount of bleeding gradually increases. About day 8, the bleeding begins to gradually decrease and eventually stops. However, the duration of the bleeding varies among different breeds of dogs. Additionally, reproductive system disorders such as uterine pyelonephritis can also cause bleeding, along with other symptoms such as high fever, loss of appetite, increased water consumption, and brownish discharge from the vulva. It's important to distinguish between these and normal heat cycle bleeding.

1. Firstly, dog heat cycle bleeding is generally a normal occurrence. As long as there are no other abnormalities, owners don't need to worry too much. During this time, owners should take good care of their dogs, especially keeping their external reproductive organs clean.

2. A dog's heat is seasonal, occurring once in the spring (March-April) and once in the autumn (September-November). The heat cycle lasts about 5-12 days on average, with a duration of 9 days and a few cases lasting up to 21 days. During this period, a dog's external vulva will secrete reddish or pinkish discharge.

3. Regarding dog heat cycle bleeding, the initial color is usually relatively dark, and the amount of bleeding gradually increases. About day 8, the bleeding begins to decrease. The amount of bleeding varies among different breeds of dogs. If the dog does not become pregnant, the heat cycle will restart after a certain period.

4. It should be noted that reproductive system disorders such as uterine pyelonephritis may also cause bleeding in dogs. If owners notice any other abnormalities in their dogs, such as high fever, loss of appetite, increased water consumption, and brownish discharge from the vulva, they should consult a veterinarian and seek treatment promptly.