Frogs are one of the common animals, belonging to amphibians, especially in rural areas, and the probability of seeing frogs is relatively high. Animals generally have their own unique calls, and frogs are no exception. They croak. If you see them in rice fields or water's edge at ordinary times, you may hear them croaking. In addition, frogs can often be heard in some videos and audio. Especially in summer, when frogs are active, their calls are very loud. Frogs prefer to bark on rainy days, because the air is humid at this time, and the skin of frogs is humid, which can be used for them to breathe smoothly. Frogs are active at this time, and they are easy to make loud barks.

As mentioned above, frogs croak. Especially when it rains in summer, frogs like to make such calls very much, and the calls are very loud. If there are a large number of frogs staying together at this time, then the calls can be said to be one after another. Frogs make such calls, which has a lot to do with their singing capsules. Because the frog's singing sac has a special structure, it can contain a part of air, and when the internal air vibrates, it will make a croak sound. The frog has a sound capsule on each side of its head, in which the sound can resonate, which makes the frog make a loud cry.