In the animal kingdom, pregnancy rarely follows the rules, with many species being pregnant for a year or more.

For humans, the gestation period can last forty weeks. There are cramps, morning sickness, strange food cravings, increasing discomfort, and a multitude of other effects. And the nine months of ...

Many mammals deliver in minutes after long pregnancies. See which species have the quickest births to help newborns thrive.

Elephants are among the smartest, largest animals on the planet. With all that size and brain power, it should come as no surprise that making a baby elephant is no easy task. In fact, elephants have ...

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