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An Asian elephant pregnancy lasts 21.5 to 22 months, nearly two years. The calf usually weighs between 150 and 350 pounds at birth.

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An Asian elephant pregnancy lasts 21.5 to 22 months, nearly two years. The calf usually weighs between 150 and 350 pounds at birth.ILLUSTRATION · AI

Asian elephant pregnancies last between 21.5 and 22 months, the Smithsonian's National Zoo says.

Usually a single calf is born, occasionally two, weighing between 150 and 350 pounds (68 to 158 kilograms).

Adult Asian elephants weigh on average between 6,000 and 12,000 pounds and stand 6 to 12 feet tall at the shoulder. They are slightly smaller than their African cousins.

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