When does the frog appear?

Frogs appear in spring, summer and autumn. Frogs, Ranidae, national third-class protected animals. Frogs often inhabit rivers, ponds and rice fields, mainly in the grass near the water, and sometimes they can dive into the water. Mostly at night, mainly eating insects, but also eating some snails, snails, shrimps, small fish and so on. Most of the insects they eat are agricultural pests.

Appearance characteristics of frogs

Frog body can be divided into three parts: head, trunk and limbs. Frog has four toes on its front foot, five toes on its back foot and webbed feet. There are two slightly bulging bags on both sides of frog's head. That's its eardrum. Frogs can hear sounds through it. Frog's back is green, smooth and soft, with patterns, and its abdomen is white. You can hide it in the grass, which makes it easier to catch pests and protect yourself. Its skin can also help it breathe. Its airbag is only available to male frogs. Frogs hunt with their tongues, which contain mucus.

Frog's habits

When it gets cold in late autumn, frogs hibernate at the bottom of the water or in caves, and then return to the water to breed when the weather gets warmer the next spring. During the breeding season, many male frogs often gather in the same area and sing loudly and continuously. This is the so-called frog quarrel pit. In fact, this is a courtship behavior of male frogs, which attracts the opposite sex by singing and forms a spouse.

Because the naked skin can't effectively prevent the evaporation of water in the body, they can't live without boiling water or humid environment, and they are afraid of drought and cold. Therefore, most of them live in tropical and temperate rainy areas, and there are very few species distributed in cold zones. When I was a child, I could only live in water. When I grow up, I can live on land. Frogs breathe with their lungs, but they can also draw oxygen from the air through wet skin. Various pigment cells in its skin will also expand or contract with the change of humidity and temperature, thus changing the depth of skin color.