Males contribute to parental care in fewer than five percent of all mammalian species.

在所有哺乳动物物种中，只有不到5%的雄性承担父母养育的责任。

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The disease can spread from one mammalian species to another.

该疾病能够在不同的哺乳类物种之间传播。

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Ferrets are another mammalian species known to be susceptible to infection.

雪貂是另一种已知易受感染的哺乳类动物物种。

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This is really no surprise at all in a mammalian species where one sex does all the viviparous part of the perpetuation of it.

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True, we have a lot more choices (often aided by technology) about precisely how we do these things in the modern world but we are still built by a hundred thousand years or so of our own species, tens of millions of years of mammalian evolution, into ending up with slightly different brains and slightly different interests to go along with our very different gonads.

FORBES: How To Increase Business Profits: Go Sexist