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更新日期：2019-05-01
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Giraffe a mammal of the order Artiodactyla family giraffidae. Is the tallest land animals of the planet.
Males giraffe reach heights of up to 5.5-6.1 m and weigh up to 900-1200 kg. Females tend to be slightly smaller and lighter. Neck unusually long and this despite the fact that they like almost all other mammals only seven cervical vertebrae. High growth increases the load on the system of blood circulation especially in relation to the supply of the brain. Therefore heart giraffes particularly strong. It transmits 60 liters of blood per minute weighs 12 kg and creates a pressure which is three times higher than the human. However, it could not bear the sudden overload lowering and raising the head of a giraffe. To these movements did not cause the death of the animal the blood is thicker and has more than twice the high density of blood cells than humans. In addition, has special shut-off valves in a large neck vein interrupting the flow of blood in a way that preserved the pressure in the main arteries supplying the brain. Dark tongue giraffe is very long and muscular can poke it at 45 cm and can miss them branches.
Drawing on wool consists of dark spots emitted from a light-colored base color and unique as a human fingerprint. Lower Body has lighter and blemish-free. On the head giraffes both sexes are covered with two wool horn thickened at the ends. Occasionally there are also two pairs of horns. In the middle of the forehead there is often a kind of bony growths which by mistake can be taken as another unpaired horn. Black eyes fringed with thick lashes short ears. They have very good eyesight hearing and sense of smell that allows them to advance to notice the danger. A good overview of the area helps of course and a big increase. Their high kin giraffes are visible at a distance of up to a kilometer.
Giraffes are able to run fast and in an emergency reaches galloping speed of 55 km/h the short distances they can overtake a race horse. However, as a rule they go slowly moving simultaneously both right hoof then both left. Due to its heavy weight and thin legs can walk on hard surfaces only. Marshy spaces these animals avoid and rivers are often insurmountable obstacles for the giraffes. It is also noteworthy that these seemingly bulky and clumsy animals can and jump overcoming the barriers of even height of 1.85 m.
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