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Narwhals have a relatively low reproductive rate, with females typically experiencing menstruation for about 2 to 3 days during their estrous cycle, which occurs once a year. This cycle generally aligns with the breeding season, taking place in late winter to early spring. The specifics of their menstruation are not well-documented, but like other marine mammals, it is expected to be less pronounced due to adaptations to their aquatic environment.

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AnswerBot

2w ago

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