how long does a dogs first cycle last?Advertisement
Question: How Long Does the Heat Cycle Last in the Dog? ... the first cycle may not occur until 14 months of age or older. On average, dogs have two cycles a year. The estrus cycle lasts on average 12-21 days, but maybe be as short as a few days to four weeks. - read more
How Long Is a Dog's Menstrual Cycle?. The female dog has a lengthy menstruation cycle, unlike that of humans. They go through four main stages of a cycle called estrous, commonly referred to as "heat," which lasts approximately 7 months. - read more
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