Tell me about bats.

Some people say that a bat is a kind of bird. It can fly like a swallow. Actually, it's not a bird, it's a mammal. It feeds its children with milk. The head and trunk are like mice, and there is skin wax between the limbs and the tail to form its wings, which are hairless. It has invisible eyes and poor eyesight. It is a flying mammal, guided by its own ultrasonic waves.

Bats are used to sleeping in the dark during the day. Instead of building nests, they spend the day in existing holes in walls, tiles, rocks and caves. It is afraid of the sun and can hang upside down like an eggplant when resting. In the cold winter, if you can't find a suitable insulation place for the winter, you are likely to freeze to death.

Bats come out at night and fly in the air, catching mosquitoes, flies, moths and other insects for food. Like swallows, dragonflies and frogs, it is a good friend and a beneficial insect. We should protect it.

Although the bat looks unremarkable, it is dark in a dark corner. But it is indeed an expert in catching pests and a friend of mankind. We should protect it like frogs and swallows.