The purpose of ears

The ear is also an important sensory organ on the human head, but because the ear is often located on the side of the head, it is not as easily paid attention to as other sensory organs. However, if there is a problem with the ears, it will seriously affect a person's normal quality of life and even cause disability. People who don’t know much about their ears should learn about the functions of the human ear.

The ears of animals function as hearing organs and can also protect their own safety.

The squirrel's auricle protects its eyes from being hurt by branches and thorns. In the African desert, there is an animal called the bat-eared fox, whose ears take up a large part of its body. Such large ears can not only block the invasion of the scorching sun's heat waves, but also dissipate the heat accumulated in the body.

Some animals not only have very sensitive hearing, but also have ears of special shapes. Bats' ears are round, like two trumpets, which can receive ultrasonic waves emitted from their mouths; dogs' ears are erect and can turn, so they can hear sounds coming from all directions.

Animal ears have the same basic functions as human ears. Some animals not only have very sensitive hearing, but also have unusually shaped ears. Bats have round ears that appear very large compared to their bodies.

When a bat is flying, its ears are like two trumpets that can receive ultrasonic waves emitted from its mouth. The hair on its ears can also detect slight vibrations, which are more sensitive than the tentacles of a snail. A dog's ears are erected, so it can hear any sound. It can also turn and hear sounds coming from all directions.

On the contrary, pigs have large, drooping ears, so they have slow hearing and love to sleep. There are also some animals whose ears only have external auditory canals but no auricles. For example, moles have no auricles on their ears, which makes it easier for them to move around in burrows. Birds also have no auricles. If they had pinnae, they would increase drag when flying.