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Mature female kangaroos often spend their lives in a state of constant pregnancy. As an older joey moves closer to being weaned, a new young embryo makes its way to the pouch, where it will attach to a teat and stay there during its development. In times of drought or food shortage, the mother kangaroo will actually suspend the development of the embryo until a better time. this is called embryonic diapause.

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15y ago

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