Frog is one of the common animals in China, and it is also a typical amphibian. Frogs can often be seen or at least heard in daily life, especially near rivers, ponds and other waters. Frogs are found in spring, summer and autumn, which means they are likely to appear except in winter. Frogs belong to temperature-changing animals, which means that they will go into hibernation in winter and sleep in caves. At this time, they are at rest and will not continue to move.

Although frogs appear in spring, summer and autumn, their frequency is different in these three seasons. Frogs are relatively more likely to appear in summer. Especially in rainy summer weather, frogs are very active. Many frogs can be seen near ponds or rice fields where frogs gather, and their loud cries can be heard. Frogs also tend to come out at night, so it is easier to see them at night. In spring and autumn, the frequency of frogs will be relatively low, especially when the temperature is relatively low in early spring and late autumn.

Frogs reproduce by laying eggs, and they generally reproduce in spring every year. Generally speaking, it is in March and April every year, which is the peak period of frog breeding. Frogs' reproductive ability is very strong. Generally speaking, a female frog can produce thousands of frog eggs every year. Although these eggs will not all develop into frogs in the end, the number of successful reproduction is still considerable. When sperm and egg cells combine to form fertilized eggs, tadpoles first develop, and then develop into young frogs and adult frogs.