[Answer] Which mammal has the longest pregnancy?

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Which mammal has the longest pregnancy?

• Elephant:Elephants have the longest gestation period of all mammals, carrying their young for 22 months before giving birth. Long developmental periods are common among highly intelligent animals. Since elephants are the largest living and biggest-brained land animal in the world, they undergo extensive development in the womb. Although elephants usually only carry one baby at a time, 1% to2% of elephant births produce twins. When an elephant gives birth, the other elephants in the herd form a protective circle around the mother during the delivery.

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