As we all know, the elephant is the largest mammal on land and has almost no opponents. There are currently only three elephants in the world, namely Asian elephants, African grassland elephants and African forest elephants. African elephant is large, and Asian elephants are relatively small.

In our impression, the elephant is a vegetarian and never eats other animals. However, the elephant will harm the vegetation around the habitat. The elephant will scrape the bark with an ivory, flatten the shrub, and even push the big tree down.

In the middle of the last century, there were about 25,000 elephants in Chawo National Park. The local government believes that the amount of elephant eats too large, and the elephant group will destroy the woods and affect the vegetation. So they plan to eliminate the elephant manually. The manager and animal researcher of the park strongly opposed. Because they studied more than a hundred years of animal literature, they found that the elephant influenced the local ecology and species.

From the forest land to grassland, and then from the grass to the forest land, the disappearance of some vegetation is actually a perfect resurrection of natural vegetation cycle. If the destruction of an elephant is missing, the forest land and shrub will expand a large area. Africa is a very hot and dry place, which can easily cause the grassland fire and cause huge damage.

Elephant's brain is the largest among all mammals on land, and its IQ is also very high. Elephant's IQ is almost as high as gorillas, and its convergence evolution makes its brain appear similar to the structure of the human brain. Elephant's brain has a lot of neurons, which allows it to engrave important experiences into long -term memory and make their memory far beyond mechanical memory.

Early studies have shown that elephants can use the body to monitor ground vibration. For example, people have observed that the elephant will run to the highland before the tsunami occurs; a female elephant who feels threatening will step on the ground and warn other elephants not to approach.

This study shows that the information passed by elephants may be rich and diverse. Not only can they cause different vibrations with different behaviors, but they can also receive information from long distances. As elephants live in complex and decentralized communities, they have to rely on long -distance communication to survive. Ground vibration can be used to tell each other in danger, and it can also help elephants find spouses during a very short mating period.

Animals will not only evolve, but also degenerate. In recent decades, ivory poaching has been a very profitable thing. When the profit is high, someone will do something illegal. So poachers all over the world have shifted their goals to innocent elephants. Although they only need ivory, elephants will die in the process of stealing. At present, countries around the world have strengthened their efforts to crack down on poachers, but ivory buying and selling incidents are still happening.

Therefore, the elephant has begun to degenerate. In the past, in order to increase their survivability, elephants need to use ivory to fight against other animals. But now the elephant with ivory is always hunted, so its number is scarce. Those elephants without ivory have escaped the calamity. As a result, animal research experts found that the number of elephants without ivory began to increase.