Elephants often swing in the air with their long noses up, and can smell hundreds of meters or even more, so as to judge whether there is danger.
An elephant's nose can be used to absorb water. The secret of using the nose to absorb water without choking is that there is a special cartilage behind the nasal cavity and above the esophagus, which acts as a "valve". When an elephant absorbs water, the muscles in its throat contract, and the "valve" is closed, so that water can smoothly enter the esophagus without entering the trachea. After drinking water, the residual water in the nose is discharged. At this time, the "valve" opens automatically and breathing is normal.
The elephant's nose is also a weapon of self-defense. An elephant's nose can easily roll up hundreds of kilograms of things. When attacked, the elephant will wave its nose and beat its opponent, then roll it up and throw it into the air.
An elephant's nose can be as long as one meter. Male elephants often use their trunk as their fifth leg to support their bodies.
The living habits of elephants
Elephants are social animals. The leader of the elephant group is the oldest female elephant, and the adult male elephant only bears the responsibility of defending family security.