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Giraffes and Impalas

Giraffes and Impalas

The Angola or Namibia Giraffe, which is now only rarely found in Angola but is still free-roaming in Namibia, is a desert adapted mammal. It can go for weeks without water and can close its nostrils completely to ward off against dust. 

The heart of a giraffe is very large and can weigh more than 25 pounds. As the blood must travel a long way from the heart to the head, a giraffe’s blood pressure is approximately double that required by humans. Giraffes, furthermore, have unusually high heart rates for their size, at 150 beats per minute.

The horns of...