At birth a baby kangaroo is 100,000 times smaller than an adult - here's how other animals compare

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Whether an animal has large or small babies depends on how independent they need to be at birth. Adult Red Kangaroos are 100,000 times the weight of their young at birth. In contrast, baby giraffes are only 1/10th the weight of their mothers.

Produced by Ruchika Agarwal

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