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450 Days


Play Fact Master on Gestation Periods in Mammals  (it's free)    



A Black Rhinoceros
   has an average gestation period of   
450 Days
A calf weighs about 35 – 50 kg at birth,
A Giraffe
   has an average gestation period of   
420-450 Days
The giraffe is the only ruminant with gestation longer than a year (http://www.wildlife-pictures-online.com/giraffe-information.html)






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