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How long are chimpanzees pregnant?

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A common chimpanzee (Pan troglodytes) sits on a rock holding a long blade of grass in its mouth, with dense green foliage in the background. — chimpanzee The West African, or masked, chimpanzee (Pan troglodytes verus) is a critically endangered subspecies of chimpanzee.

Chimpanzees have a gestation period of approximately eight months, or about 230 days.12