Children often ask a question, why the giraffe's neck is so long, after the baby asked you, you can tell her~
Giraffes are the tallest land animals in the world. Someone once measured a very large giraffe, which was nearly 6 meters high. The giraffe has a strange appearance. It is very alert, very flexible movement, long on the head of the protruding eyes can observe the situation around at the same time, four long legs support nearly a ton of body, run, speed can reach 60 kilometers per hour. In Africa's grasslands and forests at the junction of patches of trees, you can see them chewing leaves.
In the early stage of ancient evolution, giraffes were only the size of young deer and were active in Europe, Asia and Africa. With the changes of the earth, giraffes have gradually concentrated in a few areas of eastern Africa. When studying the evolution of giraffes, biologists believe that the ancestors of giraffes have been eating grass for generations. However, when suffering from drought and other disasters, a large area of grassland is dry and barren. In order to survive, giraffes should always try to stretch their necks and eat the tender leaves on the trees. Those giraffes with short necks can not eat the young leaves on the trees and are gradually eliminated by natural conditions. In this way, after many generations, the neck slowly grew longer, and finally formed what it is now.
The giraffe's long neck is essential for keeping watch, understanding the enemy's situation and seeking food, and it is also an effective cooling tower. By its neck heat dissipation, it can adapt to the tropical heat. When moving forward, the giraffe's long neck can also be used to increase power. When walking and running, the head is placed in front to move its center of gravity forward.
At present, the total number of giraffes in the world is about 450000. Giraffe's unique body and posture, no animal can be compared with it, so it is loved by people. Zoologists believe that giraffes are the most intelligent characters in ungulates (Artiodactyla). Nowadays, the invasion of civilization to nature is becoming more and more serious. Giraffes are gentle and gentle. Unlike rhinoceros, giraffes will destroy household facilities; unlike lions, they will trample on large crops and destroy forests; nor do lions and leopards kill cattle and sheep and harm human beings. Giraffes do not compete with cattle and sheep for grass. If human beings stop foolishly expanding their aggressiveness, giraffes will be able to live with us for a long time to come.