And Youのインスタグラム(dolphinsandyou) - 7月18日 07時05分

#FAQ: How do you tell the difference between a male and female dolphin?

Dolphins have no secondary sex characteristics. In fact, the only way to determine a dolphin’s gender is to see a clear view of their underside. Males have two slits that look similar to an exclamation point. Females have what looks like a division sign with one continuous slit flanked by mammary glands.

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