How long is a dog period?

Dogs don't have periods like humans do. They go through a heat cycle, which is also called estrus. This is the time when a female dog is fertile and can become pregnant.

A heat cycle typically lasts two weeks, but can range from 7 to 21 days.

Here's a breakdown of the stages of a heat cycle:

* Proestrus: This is the first stage, lasting 7-10 days. The dog's vulva becomes swollen and red, and she may have bloody discharge.

* Estrus: This is the fertile stage, lasting 5-9 days. The bloody discharge will become lighter and watery, and the dog will be receptive to mating.

* Diestrus: This is the post-estrus stage, lasting 60-100 days. The discharge will stop, and the dog will no longer be receptive to mating.

* Anestrus: This is the resting stage, lasting for several months. The dog will not be in heat during this time.

It's important to note that each dog's cycle can be different, and there's no way to predict exactly when a dog will go into heat. If you have any concerns about your dog's heat cycle, it's best to consult with your veterinarian.