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30 shackles is about 100 times as tall as a Giraffe.
In other words, the height of a Giraffe is 0.01 times that amount.
(Giraffa camelopardalis) (Adult, average)
An adult giraffe may grow to be up to 0.20 shackles tall. Adult giraffes require very little sleep, averaging just 1.9 hours per day.
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