Understanding the heat cycle of your dog is crucial for responsible pet ownership. Female dogs go through a reproductive cycle known as “heat” or “estrus” during which they are fertile and can potentially become pregnant. But how long does this heat cycle last? Let’s find out.

How long does the heat cycle of a dog last?

The heat cycle, also known as the estrous cycle, can vary in duration depending on the dog’s breed and size. On average, the heat cycle lasts for about 2 to 4 weeks, but it can range from as short as 1 week to as long as 5 weeks.

What are the different stages of the heat cycle?

The heat cycle of a dog has four distinct stages:

  • Proestrus: This is the initial stage of the heat cycle, lasting for about 7 to 10 days. During this stage, the dog’s hormone levels change, preparing her body for reproduction. You may notice bleeding or a pink discharge during this time.
  • Estrus: Also known as the “standing heat,” this is the period when the dog is most fertile. It usually lasts for around 5 to 9 days. During estrus, the discharge may become clearer, and the female will actively seek male dogs for breeding.
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