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Published: 2019-07-03 07:48:42 +0000 UTC; Views: 411; Favourites: 27; Downloads: 0
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Description The giraffe is the tallest mammal in the world, standing at around 4-5m high, and the tallest giraffes ever recorded have been up to 5.9m. That’s over a meter higher than a double-decker bus. It shouldn’t come as a huge surprise that such a large animal weighs quite a lot as well – up to 1900kg, which is more than most cars! A giraffe’s neck is too short to reach the ground. As a result, it has to awkwardly shuffle and spread its front legs to reach the ground for a drink of water. Fortunately, giraffes only need to drink once every few days, as they can get most of their water from all the plants they eat. Despite being incredibly tall, giraffes still only have seven vertebrae in their necks – which means a giraffe neck has the exact same number of bones as a human neck! A fully grown giraffe can raise or lower its head by up to 5m, so it might actually pass out were it not for a dense network of fine capillaries (the ‘rete mirabile’) that cushions its brain against rapid changes in blood pressure. Other adaptations to prevent sudden giraffe collapse are valves to stop the back-flow of blood and elastic-walled vessels that dilate and constrict to manage the flow.
Info source: www.discoverwildlife.com/anima…
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The photo was taken during September 2017 near Lower Sabie, Kruger National Park, Mpumalanga, South Africa.
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